Bristleworms in Reef Aquariums

Overview

What It Is: Bristleworm is a broad hobby term for marine polychaete annelids bearing chaetae or setae. Their diets and bristle structures differ. Some Amphinomidae, including Hermodice carunculata, consume living cnidarians; do not classify every worm as harmless or harmful from color alone.

Why It Matters: Some polychaetes consume carrion or leftovers while some fireworms consume living sessile animals. Indiscriminate poisoning is not justified by a broad hobby name. Identify and observe the actual worm rather than declaring a whole population beneficial or harmful.

When It May Be Normal or Temporary: A few worms in live-rock crevices do not by themselves establish harmful predation. Observe feeding and livestock condition; a rise after a death may represent scavenging rather than the cause of death.

When It Indicates a Real Problem: Worms crowd exposed food, daytime activity becomes common, trap counts rise, large individuals enter pumps, coral damage is observed directly, livestock disappear, or suspected fireworms repeatedly feed on living tissue.

Aquarium Types Where It Commonly Appears: Reef tanks, fish-only-with-live-rock systems, coral quarantine tanks, frag systems, marine sumps, refugiums, and aquariums receiving uncured or mature live rock.

Livestock or Systems Most at Risk: Corals and sessile invertebrates if a predatory fireworm is present; weakened or newly dead animals that attract scavengers; small tanks prone to die-off pollution; and keepers handling rock without puncture-resistant gloves.

Where It Occurs

Saltwater and reef aquariums, including live-rock systems and marine sumps.

What Can Be Affected

Marine polychaetes have diverse diets; scavenging behavior does not identify every aquarium worm as harmless. Hermodice carunculata can consume living cnidarians. Document the specimen's feeding and fresh damage before deciding on removal, and avoid direct bristle contact.

When to Act

Usually low when ordinary scavenging worms are present. Moderate when numbers are excessive or identity is uncertain. High when a suspected fireworm is actively feeding on coral or livestock. Human breathing difficulty or a severe allergic reaction after contact is an emergency.

Why It Matters

Bristleworms commonly arrive in live rock, but the broad hobby name includes many species with different diets and risks.

Signs & Identification

Visible Signs: Segmented body, paired side appendages and bristle bundles, rapid retreat into holes, cast bristles, nighttime emergence, worms gathering at meaty food, and tunnels or hiding points within porous rock.

Livestock Behavior Signs: Coral retraction or tissue loss near a worm is concerning but not proof of predation. Watch whether it contacts healthy tissue or scavenges a carcass, and investigate other causes of livestock decline.

Water-Test or Instrument Findings: No water test identifies bristleworms. Ammonia or nitrite may rise after mass mortality; elevated nitrate, phosphate, and accumulated organics can accompany the feeding and waste conditions that support large populations.

Equipment or Flow Findings: Worms shelter in live rock, sand, overflows, filter socks, sumps, pumps, and plumbing. Detritus pockets and food entering low-flow areas support them. Large specimens may be injured by pumps or complicate equipment service.

Odor, Texture, Color, Location, or Pattern: Most have an elongated segmented body with bristles in repeated lateral tufts. Color ranges from pale pink and gray to brown, red, orange, or green. Fireworms may be broader and show conspicuous white bristles and branched red or orange gills, but photographs rarely confirm species alone.

Typical Onset and Progression: Small worms often arrive unnoticed and remain hidden for months. Numbers become obvious after sustained overfeeding, a mortality event, or nighttime observation. Large individuals may be discovered suddenly when rock is moved.

How to Confirm the Problem: Use red or dim light after dark, bait a transparent trap, and photograph the worm from above and the side without touching it. Document head, gills, bristle tufts, segmentation, size, and any direct feeding on healthy tissue. Obtain expert identification for suspected fireworms or eunicids.

What Cannot Be Confirmed Visually: A distant photo may not establish species, diet, maximum size, sting severity, total population, whether a worm killed an animal or scavenged it, or whether similar-looking damage has another cause.

What It Looks Like: Segmented worms with paired bristle tufts along both sides, usually emerging from rock or substrate after dark. Ordinary scavengers are often gray, pink, or brown; some fireworms are broader and more conspicuous, with bright white bristles and colored gill tufts.

Similar Problems / Differential Identification

Commonly Confused With: Bearded and other fireworms; eunicid worms; peanut worms; spaghetti and hair worms; feather dusters; flatworms; brittle-star arms; vermetid snail mucus; and the feeding tentacles of beneficial sand-dwelling worms.

How Similar Problem 1 Differs: A worm with a distinct head or conspicuous mouthparts needs expert identification. Do not identify a eunicid or infer predation from color, size or a comparison with a broad bristleworm trade label alone.

How Similar Problem 2 Differs: A smooth retractile worm or feeding tentacles from a hidden tube may be a different invertebrate group. Document body structure and obtain expert identification; do not infer diet or apply a bristleworm treatment from this distinction alone.

Tests or Observations That Distinguish Them: Compare segmentation, bristle arrangement, gills, head appendages, jaws, body width, movement, tube or burrow, activity time, bait response, and direct feeding behavior. Use clear macro images rather than color alone.

Information Needed Before Recommending Treatment: Tank size and age; full photographs or video; likely species; worm size and number; coral and invertebrate inventory; observed damage; feeding and recent deaths; live-rock history; water tests; equipment; prior traps or treatments; and any human contact.

Other Plausible Causes: A normal cleanup population may be mistaken for an infestation. Eunicid worms, peanut worms, spaghetti worms, flatworms, brittle-star arms, vermetid feeding webs, or other hitchhikers may be misidentified as bristleworms.

Urgency & Triage

Emergency Warning Signs: Breathing difficulty, facial swelling, eye exposure, severe spreading pain, or systemic symptoms after bristle contact; fish gasping; ammonia or nitrite; large-scale worm or livestock death; pump blockage; or rapid coral tissue loss linked to active feeding.

Immediate Stabilization Steps: For aquarium instability, restore safe aeration and filtration, remove dead organisms with tools, test water, and use matched saltwater changes for measured problems. After bristle contact, stop handling and do not rub, cut, or dig into the skin. Contact Poison Control or a clinician for case-specific first aid; breathing difficulty, facial swelling, or eye exposure requires urgent medical care.

Whether Feeding, Lighting, Dosing, or Equipment Should Be Paused: Reduce confirmed overfeeding and remove leftovers. Keep circulation, filtration, heat, and aeration running unless equipment must be safely unplugged for service. Pause unverified worm-control chemicals; temporary low light may help nighttime observation but is not treatment.

Whether Isolation or Quarantine Is Appropriate: Quarantine live rock, coral bases, macroalgae, and new invertebrates when practical. A removable rock containing a confirmed harmful worm may be isolated in saltwater for targeted extraction, but avoid exposing coral or beneficial hitchhikers to unsafe dips.

When Monitoring Is Safer Than Immediate Intervention: Monitor ordinary scavenging worms when corals and livestock are healthy and the population is modest. Their cleanup role and the risks of rock disruption or chemical die-off may outweigh the benefit of eradication.

Escalation Point: Escalate when direct feeding on healthy coral or invertebrates is documented, fireworm features are strong, trap counts continue rising after nutrient control, a large predator evades removal, or human contact risk cannot be controlled.

Immediate Risk: Avoid contact with unidentified bristled worms. Some fireworms can injure people or consume living sessile animals, but risk is not identical across polychaetes. Unnecessary poisoning or mass removal can create a decomposition and water-quality problem.

Causes & Contributing Factors

Primary Cause: Introduction on live rock or other wet marine material followed by enough food and shelter for survival and reproduction.

Other Common Causes: Overfeeding, meaty food left in rockwork, dead fish or snails, coral tissue loss, detritus accumulation, dirty filter socks, neglected sumps, and repeated introduction on coral plugs or macroalgae.

Water-Quality Factors: High nutrients do not create bristleworms, but they can indicate excess food and waste. Ammonia, nitrite, low oxygen, unstable salinity, and temperature stress harm livestock and can produce deaths that attract scavengers.

Biological or Pathogen Factors: Polychaetes differ widely in diet and reproduction. Most aquarium bristleworms are free-living scavengers, not fish parasites. Amphinomid fireworms carry defensive bristles that can penetrate skin, and some species feed on living cnidarians and other sessile animals.

Algae or Pest Factors: Bristleworms consume carrion, detritus, and leftover animal foods. Their abundance often tracks available organic matter. They may coexist with aiptasia, vermetids, flatworms, crabs, and other live-rock hitchhikers that require separate identification.

Equipment or Flow Factors: Porous rock, deep crevices, sand, sumps, filter socks, and low-flow spaces provide shelter and food. Mechanical filtration that is left dirty can become a feeding site, while excessive pump exposure can shred worms and disperse bristles.

Feeding, Stocking, or Husbandry Factors: Heavy broadcast feeding, oversized portions, frequent frozen food, and failure to remove carcasses support large populations. Feeding reductions should still meet the nutritional needs of fish, corals, and invertebrates.

Maintenance Factors: Accumulated detritus, infrequent filter-sock changes, neglected sumps, dead zones, and moving rock with bare hands increase population and injury risks. Deep cleaning all rock and media at once can destabilize the reef.

Recent Changes That Can Trigger It: New live rock, coral frags, macroalgae, sand, increased feeding, a livestock death, coral die-off, aquascape disturbance, reduced maintenance, or removal of a natural predator.

Environmental or Seasonal Factors: Stable warm reef temperatures support normal activity. Spawning or increased emergence may follow environmental cues, heavy feeding, or disturbance, but a sudden sighting does not prove a new introduction.

Diagnostic Workflow

Questions to Ask About Recent History: When and where was the worm seen? Was it feeding on healthy or dead tissue? What entered the tank recently? Has feeding changed? Are livestock missing? What do the head, bristles, and gills look like? Were rocks handled or chemicals used?

Step 1 - Immediate Visual Inspection: Inspect rock holes, sand edges, coral bases, overflows, and sump areas after dark with red light. Photograph the entire worm without touching it and document any direct interaction with healthy tissue.

Step 2 - Water Tests and Measurements: Test ammonia, nitrite, nitrate, phosphate, salinity, temperature, pH, and alkalinity as appropriate. Record feeding and count worms or trap captures under consistent nighttime conditions.

Step 3 - Equipment and Flow Checks: Inspect filter socks, skimmer areas, pumps, overflows, sumps, refugiums, and detritus pockets. Unplug equipment before opening it, remove debris safely, and keep biological filtration intact.

Step 4 - Livestock, Plant, or Coral Checks: Examine coral margins, clam mantles, anemones, snails, crustaceans, and recently dead animals. Separate active predation on healthy tissue from scavenging on tissue already damaged by disease, pests, aggression, or water quality.

Step 5 - Narrowing the Cause: Classify the worm group, confirm whether harm is observed or assumed, then rank food availability, mortality, detritus, live-rock introduction, and equipment shelter before choosing control.

Common Diagnostic Mistakes: Calling every polychaete a fireworm, identifying by color alone, mistaking scavenging for predation, overlooking eunicid worms, judging population only after feeding, and removing worms before correcting excess food.

First Checks: Photograph the whole worm after dark, note bristle and gill pattern, head shape, size, retreat behavior, and what it is eating; inspect coral damage and recent deaths; review feeding; and test ammonia and nitrite if livestock or many worms have died.

Correction & Management

Immediate Stabilization: Protect water quality and oxygen, remove carcasses and exposed bristles with tools, stop unsafe chemicals, isolate damaged equipment, and address ammonia or nitrite before pest control.

Cause-Specific Correction: Reduce surplus food, remove trapped detritus, service mechanical filtration, trap or extract confirmed harmful individuals, quarantine new wet additions, and retain ordinary scavengers when they are not causing harm.

Recommended Order of Actions: 1) Protect people and livestock. 2) document the worm and damage. 3) check water quality and deaths. 4) correct excess food and detritus. 5) trap and identify specimens. 6) remove confirmed harmful individuals with tools. 7) monitor at night. 8) escalate persistent predation.

Water-Change Guidance if Applicable: Use temperature- and salinity-matched water changes to remove siphoned waste and correct measured problems. Capture debris in a fine filter when needed, inspect hoses and buckets, and do not release marine organisms into drains or waterways.

Equipment or Filtration Changes: Improve filter-sock and prefilter service, direct flow toward detritus collection points without blasting coral, screen accessible intakes where appropriate, and provide safe access to sump debris. Preserve established biological media.

Maintenance Changes: Avoid direct contact. If removal is justified, use a monitored purpose-made trap or tools that keep hands away from the animal, following equipment directions and checking for non-target captures. Gloves are not a guarantee against bristle penetration. Do not pull against living coral or dismantle structural rock; refer inaccessible animals.

Livestock, Plant, or Coral Care: Support damaged coral with stable water and appropriate flow and light, reduce further handling, and evaluate other causes of tissue loss. Do not add a predator unless the aquarium can meet its permanent diet, size, and compatibility needs.

Treatment or Medication Considerations if Applicable: Medication is rarely appropriate for ordinary bristleworms. Broad dewormers, copper, oxidizers, freshwater dips, or improvised chemicals may harm corals and invertebrates and create a dangerous die-off. Prefer physical removal of confirmed pests and professional guidance for any chemical plan.

Expected Time to Improvement: A trap capture does not establish removal of every hidden worm. Repeat comparable observations and review excess food, carcasses and actual feeding damage. No overnight capture guarantee or universal population-reduction time is established.

Signs the Correction Is Working: Trap and nighttime counts fall, fewer worms crowd food, detritus and leftovers decline, no new coral or invertebrate damage appears, livestock remain healthy, and ammonia and nitrite stay undetectable by the chosen test method.

Signs the Problem Is Worsening: Daytime emergence increases, large worms become bolder, coral tissue loss coincides with feeding, trap counts rise, animals disappear, pumps contain worm fragments, or mass mortality causes cloudy water, odor, ammonia, or low oxygen.

What to Do if the First Correction Fails: Improve photographs, reconsider eunicids or other hitchhikers, place traps near the observed burrow, change bait and timing, inspect hidden deaths, verify feeding, isolate the affected rock when safe, and seek expert help before chemical treatment.

Safest First Action: Keep hands away, document the worm and its feeding, and remove accessible surplus food or carcasses without disturbing coral. If targeted collection is justified, use a monitored purpose-made trap or suitable long tools without forceful extraction; check non-target captures and do not promise eradication.

Things Not To Do

Unsafe Shortcut: Handling live rock or pulling a bristleworm with bare hands or thin disposable gloves.

Why It Is Risky: Some fireworms have bristles associated with painful human contact. Unidentified worms merit contact avoidance, not a universal claim about all bristles or glove resistance. Forceful extraction may damage surrounding organisms; do not rub, cut or dig into exposed skin.

Safer Alternative: Keep hands away, use a monitored purpose-made trap or suitable long tools only when access is safe, and inspect for non-target animals. Gloves do not establish a safe handling procedure. Refer rock or coral that cannot be accessed without force or tissue damage.

Products or Treatments Commonly Misused: Copper, broad dewormers, bleach, freshwater or hypersalinity dips on occupied rock, hydrogen peroxide, boiling water near livestock, glue injected into unknown burrows, arrow-crab or wrasse additions, and unmonitored bait that decomposes.

What Not to Do: Do not touch worms with bare hands, grab them with thin gloves, crush them in rockwork, dose an unverified chemical, dismantle the entire reef for an ordinary scavenger, or blame a worm found on tissue that was already dying.

System-Specific Considerations

Freshwater Aquariums: Not applicable. Freshwater worms and their treatments differ from marine polychaetes.

Planted Aquariums: Not applicable except that freshwater plant hitchhikers should not be identified or treated using reef bristleworm guidance.

Saltwater Fish-Only Aquariums: Ordinary scavenging bristleworms may help consume carrion and leftover food in live rock. Confirm any predator before removal and protect fish from ammonia after a die-off.

Reef Aquariums: Keep beneficial scavengers when they are not harming livestock. Document direct feeding before calling a worm coral-eating, and use targeted traps or extraction for confirmed fireworms or harmful individuals.

Nano Aquariums: Small water volume increases the effect of decaying bait, dead worms, and chemical errors. Use small monitored traps, precise feeding, frequent debris removal, and rapid ammonia testing after mortality.

New Aquariums: Live rock may reveal worms during cycling or first feeding. Avoid feeding an unstocked tank heavily, remove obvious decay, preserve the biofilter, and identify hitchhikers before attempting eradication.

Mature Aquariums: A sudden population increase usually points to heavier feeding, an unnoticed death, detritus accumulation, or changed predation. Large hidden worms may have been present for years without harming the reef.

Ponds or Outdoor Systems: Not applicable. Marine worms and saltwater should never be released into freshwater ponds, storm drains, beaches, or natural waterways.

Safety & Sensitivities

Fish Safety: No generic wrasse, dottyback or crab is recommended as a bristleworm cure. A stocking proposal needs identified-species evidence, adult housing, compatible tankmates, diet and permanent care; it must not be treated as disposable pest control.

Freshwater Invertebrate Safety: Not applicable to the reef itself. Freshwater shrimp and snail medication guidance should not be transferred to marine systems.

Coral and Saltwater Invertebrate Safety: Avoid broad chemical controls in the display. A monitored trap or contact-avoiding tools can still catch or injure non-target animals; do not pull against living coral or structural rock. No generic dip or isolated-rock chemical treatment is recommended; refer any hazardous encrusted material.

Plant Safety: Marine macroalgae can carry worms and eggs. Quarantine and inspect it without using a treatment that damages the algae or releases contaminants into the display.

Medication and Chemical Risks: Whole-tank poisoning can kill beneficial polychaetes and other invertebrates, release large amounts of organic matter, reduce oxygen, and raise ammonia. Product claims rarely identify every worm or reef inhabitant affected.

Copper Sensitivity: Do not use copper as a bristleworm-control method in a reef. Copper products can harm invertebrates; freshwater aquaculture evidence does not establish a reef-safe concentration or future safe return time.

Electrical, Heat, Leak, or Pressure Risks: Unplug pumps and heaters before reaching into overflows or sumps, use GFCI protection and drip loops, keep plugs dry, and restore safe flow promptly. Never insert tools blindly near powered impellers.

Human and Pet Safety: Wear puncture-resistant gloves and eye protection when moving infested rock. Keep worms, bristles, traps, and tank water away from children and pets. Do not rub embedded bristles; seek medical help for severe, eye, breathing, or allergic symptoms.

Situations Requiring a Veterinarian, Laboratory Test, Electrician, or Other Specialist: Marine aquarium or polychaete specialist for uncertain predators; aquatic veterinarian for affected fish; coral specialist for unexplained tissue loss; poison control or clinician for significant human exposure; electrician for wet or damaged equipment.

When to Get Help: Use an experienced marine aquarium professional for uncertain identification, valuable coral losses, large or elusive predators, or commercial displays. Seek medical advice for embedded bristles with severe pain, spreading swelling, infection, eye exposure, breathing difficulty, or other systemic symptoms.

Prevention

Routine Prevention: Quarantine and inspect live rock, coral bases, and macroalgae; feed measured portions; remove carcasses; maintain mechanical filtration; siphon detritus; use dedicated tools; and wear proper gloves during rockwork.

Water-Testing Schedule: Test ammonia and nitrite after a large die-off or chemical exposure. Track nitrate, phosphate, salinity, temperature, pH, and alkalinity on the aquarium’s normal schedule and during any coral-loss investigation.

Maintenance Practices: Service mechanical media without damaging biofiltration, collect accessible loose waste, remove dead livestock, inspect after dark and empty monitored traps before bait decays. Do not blast or scatter attached animals or living tissue as a cleanup method.

Quarantine or Biosecurity Practices: Inspect coral plugs, live rock, rubble, macroalgae, and invert shipments under white and red light; keep suspect material in a separate marine system; prevent water transfer; and dedicate forceps, traps, and siphons.

Equipment Inspection: Check pumps, guards, overflows, filter socks, skimmer chambers, sumps, refugiums, tubing, heaters, thermometers, GFCI outlets, and backup aeration before and after removal work.

Early Warning Signs: More worms at feeding time, daytime emergence, a large worm leaving one burrow, bright white bristles and colored gills, repeated coral contact, unexplained carcasses, or increasing detritus in rock and filtration.

Recurrence Prevention: Control food and detritus, quarantine wet additions, remove deaths promptly, monitor known burrows, keep traps available, service mechanical filtration, and avoid moving infested rock between systems.

Common Mistakes

Mistake 1: Assuming every bristleworm is a harmful fireworm and attempting complete eradication.

Why It Matters: Indiscriminate removal discards useful scavengers, disturbs rockwork, and may cause a hidden die-off without solving excess feeding or identifying the actual source of livestock damage.

What to Do Instead: Document the worm’s structure and behavior, verify direct harm, correct food and detritus, retain ordinary scavengers, and remove only confirmed harmful or unmanageable individuals.

Mistake 2: Grabbing a worm or infested rock without protection because the visible bristles appear soft.

Why It Matters: Some fireworm bristles can cause painful contact, and glove protection is not assured. Avoid touching an unidentified worm. Forceful pulling may damage coral or rock; seek Poison Control or clinical advice after exposure rather than improvising extraction.

What to Do Instead: Use contact-avoiding tools or a monitored purpose-made trap only when removal is justified and safe. Check non-target captures, keep material contained and seek a professional for an inaccessible animal; do not rely on gloves alone.

Related

Related Common Problems: Coral tissue loss; missing invertebrates; live-rock hitchhikers; vermetid snails; aiptasia; reef flatworms; eunicid worms; overfeeding; detritus buildup; ammonia spikes.

Related Water-Quality Guides: Ammonia; Nitrite; Nitrate; Phosphate; Salinity; Temperature; pH; Alkalinity; Dissolved Oxygen; Copper; Water Changes.

Related Equipment Guides: Protein Skimmers; Sumps; Filter Socks; Aquarium Pumps; Powerheads; Overflow Boxes; Traps; Forceps; Aquarium Gloves; GFCI Protection.

Related Maintenance or Setup Guides: Live Rock Quarantine; Coral Dipping; Reef Feeding; Detritus Removal; Filter-Sock Maintenance; Sump Cleaning; Hitchhiker Inspection; Responsible Marine Livestock Disposal.

Related Livestock, Plant, or Coral Guides: Fireworms; Eunicid Worms; Peanut Worms; Spaghetti Worms; Feather Duster Worms; Aiptasia; Vermetid Snails; Reef-Safe Wrasses; Arrow Crabs; Common Reef Corals.

Sources & Evidence

Authoritative Source 1: Mehr et al., BMC Genomics (2015) - Transcriptome sequencing and annotation of the polychaete Hermodice carunculata (Annelida, Amphinomidae): https://pmc.ncbi.nlm.nih.gov/articles/PMC4462082/. Scope: H. carunculata omnivory and consumption of living sessile organisms; amphinomid calcareous chaetae. Limitation: Not every polychaete's diet, universal bristle composition, clinical first aid or aquarium trap efficacy.

Authoritative Source 2: National Capital Poison Center - Contact us: https://www.poison.org/contact-us. Scope: Access to expert poison/exposure advice and emergency referral. Limitation: Not a worm-specific extraction or first-aid protocol; no tape, tweezers, rubbing, cutting or digging prescription is inferred.

Authoritative Source 3: Merck Veterinary Manual - Environmental Diseases of Aquatic Animals in Aquatic Systems: https://www.merckvetmanual.com/exotic-and-laboratory-animals/aquatic-systems/environmental-diseases-of-aquatic-animals-in-aquatic-systems. Scope: Water-quality, oxygen, overfeeding, decomposition and biological-filtration differential/stabilization context. Limitation: Not pest eradication, fixed water-change percentages or blind pH correction; pH/temperature influence ammonia toxicity and abrupt correction of acidic high-TAN water can worsen exposure.

Additional Sources: Merck Veterinary Manual - Environmental Diseases of Aquatic Animals in Aquatic Systems: https://www.merckvetmanual.com/exotic-and-laboratory-animals/aquatic-systems/environmental-diseases-of-aquatic-animals-in-aquatic-systems. Not pest eradication, fixed water-change percentages or blind pH correction; pH/temperature influence ammonia toxicity and abrupt correction of acidic high-TAN water can worsen exposure. Hamade et al., CDC MMWR - Suspected Palytoxin Inhalation Exposures Associated with Zoanthid Corals in Aquarium Shops and Homes — Alaska, 2012–2014: https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6431a4.htm. Associative reports; no safe DIY cutting, scraping, heat, bleach/decontamination recipe or invented clinical care is provided. Requests capture returned 403; web_fetch discussion was successfully read. National Capital Poison Center - Contact us: https://www.poison.org/contact-us. Not a worm-specific extraction or first-aid protocol; no tape, tweezers, rubbing, cutting or digging prescription is inferred.

Areas Where Reliable Sources Disagree: Evidence limits differ by identified organism, host and method. Biological or taxonomy sources do not establish treatment efficacy; manufacturer documents cover only the exact product. No universal predator compatibility, clearance interval or safe-return date is inferred. Unsupported precise control prescriptions are narrowed or removed rather than presented as consensus.

Claims That Require Owner Review: Under the owner's 2026-10-07 recovery authorization, unsupported precision and hazardous DIY methods are qualified or removed in this worksheet. No new dose, off-label drug, safe-predator guarantee or consumer hazardous-coral procedure is proposed. Source-recovery readiness does not itself authorize normalization or publication.

Problem-Specific Information

Anything Important That Does Not Fit Above: A worm found on a dead animal may be performing its normal scavenging role. Direct observation of feeding on healthy tissue, repeated damage patterns, and sound identification provide stronger evidence than proximity alone.

Fields That Were Not Applicable and Why: Freshwater, planted-tank, and pond fields are marked not applicable because marine polychaetes require saltwater-specific identification and control. Medication fields focus on why broad chemical treatment is usually inappropriate.