Invertebrate Health Conditions
Browse our comprehensive directory of invertebrates health conditions and guides. Click a letter above to jump to that section.
553 ConditionsA (14 conditions)
Back To TopB (42 conditions)
Back To Top- Bacterial Infection (larvae)
- Bacterial Infection / Bacterial Necrosis
- Bacterial infections
- Bald Sea Urchin Disease (spine loss)
- Beak Damage
- Beetle Antenna Damage
- Beetle Dehydration
- Beetle Fungal Infection
- Beetle Leg Loss
- Beetle Mite Infestation
- Beetle Nematode Infection
- Beetle Old Age / Senescence
- Beetle Starvation
- Beetle Wing damage
- Bell Damage / Tears
- BIV Parasites (various)
- Bivalve Mollusks Ammonia Toxicity
- Bivalve Mollusks Bacterial infection
- Bivalve Mollusks Calcium deficiency
- Bivalve Mollusks Copper Toxicity
- Bivalve Mollusks Low Oxygen
- Bivalve Mollusks Medication Sensitivity
- Bivalve Mollusks Protozoan Infection
- Bivalve Mollusks Shell Erosion
- Bivalve Mollusks Temperature Stress
- Bivalve Mollusks Viral Infections
- Black Death (bacterial septicemia)
- Black Mat Syndrome
- Bleaching
- Bleaching (zooxanthellae loss)
- Book Lung Damage
- Book Lung Problems
- Boring Organisms Damage
- Boring Sponge Damage
- Branchiobdellids (crayfish worms - commensal/parasitic)
- Breeding problems
- Brown Jelly Disease
- Brown Ring Disease (clams)
- Bubble Disease (air entrapment)
- Buoyancy Problems (cuttlefish, nautilus)
- Buried Molt Complications
- Byssal Thread Problems (mussels)
C (68 conditions)
Back To Top- Calcium deficiency
- Calcium deficiency (soft shell)
- Calcium deficiency / Soft shell / Thin shell
- Calcium/Alkalinity deficiency
- Cannibalism
- Cannibalism (post-molt vulnerability)
- Cannibalism Injuries
- Cephalopod Ammonia Toxicity
- Cephalopod Bacterial Infection
- Cephalopod Ciliate Parasites
- Cephalopod Copper Toxicity (extremely sensitive)
- Cephalopod Eye Damage
- Cephalopod Filter/Pump Injuries
- Cephalopod Fungal Infection
- Cephalopod Heavy Metal Toxicity
- Cephalopod Low Oxygen / Hypoxia
- Cephalopod pH Imbalance
- Cephalopod Salinity Fluctuation
- Cephalopod Starvation
- Cephalopod Temperature Stress
- Chelae (claw) loss / Regeneration
- Chelae (pincer) damage
- Chelicerae damage / Fang damage
- Chelped (claw) loss
- Chemical exposure (cleaners, sprays)
- Chemical exposure / Pesticide toxicity
- Chemical warfare (allelopathy)
- Chitinolytic bacterial disease / Shell disease
- Chronic stress
- Ciliate parasites
- Cladogonium ogishimae (ellobiopsid parasite - green fungus)
- Cnidarians Bacterial Infection
- Cnidarians Calcium Deficiency
- Cnidarians Copper Toxicity
- Cnidarians Filter/Pump Injuries
- Cnidarians Foot damage
- Cnidarians Magnesium Imbalance
- Cnidarians Nitrate Stress
- Cnidarians Parasites
- Cnidarians Salinity Fluctuation
- Cnidarians Starvation
- Cnidarians Temperature Stress
- Cnidarians Tentacle Damage
- Colony decline / Die-off
- Color fading / Color loss
- Copper toxicity (from medications, pipes)
- Copper toxicity (widespread sensitivity)
- Crayfish Ammonia Poisoning
- Crayfish Antenna Damage
- Crayfish Bacterial Infection
- Crayfish Calcium Deficiency
- Crayfish Cannibalism
- Crayfish Copper Toxicity
- Crayfish Dysecdysis / Stuck Molt
- Crayfish Fighting Injuries
- Crayfish Fungal Infection
- Crayfish Incomplete Molt
- Crayfish Limb Loss
- Crayfish Mineral Deficiency
- Crayfish Molting Death
- Crayfish Nitrite Poisoning
- Crayfish Oxygen Depletion
- Crayfish Plague (Aphanomyces astaci)
- Crayfish Post-Molt Vulnerability
- Crayfish Protozoan Infection
- Crop impaction / Digestive blockage
- Crushed shell (from tank mates or decor)
- Cuttlebone erosion (cuttlefish)
D (22 conditions)
Back To TopE (26 conditions)
Back To TopF (45 conditions)
Back To Top- Failure to emerge from pupa
- Fall during molt
- Falling from glass (injuries)
- Fasting (extended - may be normal pre-molt)
- Fighting injuries (stag beetles)
- Filter feeding issues / Starvation
- Fish attacks / Fin nipping damage
- Flatworm infestation (Acropora-eating flatworms)
- Floating (trapped air, illness, or normal in some species)
- Food plant toxicity (pesticides)
- Foot injuries
- Forced shell evacuation
- freshwater Shrimp Ammonia Poisoning
- Freshwater Shrimp Bacterial Infection
- Freshwater Shrimp Black Gill Disease
- Freshwater Shrimp Chlorine/Chloramine Toxicity
- Freshwater Shrimp Deformities (Genetic or Environmental)
- Freshwater Shrimp Dysecdysis / Stuck Molt / Failed Molt
- Freshwater Shrimp Fungal Infection
- Freshwater Shrimp Heavy Metal Toxicity
- Freshwater Shrimp Incomplete Molt
- Freshwater Shrimp Lethargy
- Freshwater Shrimp Molting Death
- Freshwater Shrimp Nitrite Poisoning
- Freshwater Shrimp Oxygen Depletion
- Freshwater Shrimp Post-Molt Vulnerability
- Freshwater Shrimp Starvation
- Freshwater Shrimp Temperature Shock
- Freshwater Snails Ammonia Poisoning
- Freshwater Snails Bacterial Infection
- Freshwater Snails Chlorine/Chloramine Toxicity
- Freshwater Snails Copper Toxicity (highly sensitive)
- Freshwater Snails Cracked Shell
- Freshwater Snails Foot Damage
- Freshwater Snails Fungal Infection
- Freshwater Snails Low Oxygen / Hypoxia
- Freshwater Snails Mantle Collapse
- Freshwater Snails Medication Toxicity
- Freshwater Snails Nitrite Poisoning
- Freshwater Snails Protozoan Infection
- Freshwater Snails Shell Discoloration
- Freshwater Snails Starvation
- Freshwater Snails Tentacle Damage
- Fungal infection (larvae)
- Fungal infections
G (7 conditions)
Back To TopH (29 conditions)
Back To Top- Hermit Crabs Copper toxicity
- Hermit Crabs Dehydration
- Hermit Crabs Drowning
- Hermit Crabs Dysecdysis / Stuck molt / Failed molt
- Hermit Crabs Fall injuries
- Hermit Crabs Fungal infection
- Hermit Crabs Incomplete molt
- Hermit Crabs Limb loss
- Hermit Crabs Limb regeneration issues
- Hermit Crabs Mite infestation
I (20 conditions)
Back To TopJ (1 condition)
Back To TopL (25 conditions)
Back To TopM (71 conditions)
Back To Top- Malformed adults (metamorphosis issues)
- Mandible damage
- Mantises Anorexia / Refusal to eat
- Mantises Antenna damage
- Mantises Bacterial infection
- Mantises Dehydration
- Mantises Eye Damage
- Mantises Fungal Infection
- Mantises Humidity-Related Molt Failure
- Mantises Incomplete molt
- Mantises Leg loss / Autotomy
- Mantises Mite infestation
- Mantises Wing damage
- Mantle damage
- Mantle injuries
- Mantle recession
- Marine Crustaceans Acclimation Stress
- Marine Crustaceans Ammonia Toxicity
- Marine Crustaceans Bacterial infection
- Marine Crustaceans Black Gill Disease
- Marine Crustaceans Copper Toxicity
- Marine Crustaceans Dysecdysis / Stuck Molt
- Marine Crustaceans Fighting Injuries
- Marine Crustaceans Fungal Infection
- Marine Crustaceans Incomplete Molt
- Marine Crustaceans Low Oxygen
- Marine Crustaceans Mineral Deficiency
- Marine Crustaceans Nitrite Poisoning
- Marine Crustaceans pH Imbalance
- Marine Crustaceans Shell Disease / Shell Rot
- Marine Crustaceans Starvation
- Marine Crustaceans Temperature Stress
- Marine Snails Acclimation Stress
- Marine Snails Bacterial Infection
- Marine Snails Copper Toxicity (highly sensitive)
- Marine Snails Cracked Shell
- Marine Snails Magnesium Imbalance
- Marine Snails Medication Toxicity
- Marine Snails Nitrate Stress
- Marine Snails Parasites (various)
- Marine Snails pH Imbalance
- Marine Snails Protozoan Infection
- Marine Snails Salinity Fluctuation
- Marine Snails Shell Erosion
- Marine Snails Temperature Stress
- Marsupium problems (breeding females)
- Medication sensitivity
- Metal toxicity
- Metasoma (tail) damage
- Microsporidian infection
- Mineral Deficiency Molting Issues
- Mismolt death
- Mismolt deformities
- Mite infestation (grain mites, parasitic mites)
- Mite infestation (parasitic mites)
- Mite infestations
- Molt death
- Molt death syndrome
- Molting complications
- Molting injuries
- Molting issues
- Molting problems (where applicable)
- Montipora-eating nudibranchs
- Mouth gaping
- Moving excessively (stress sign)
- MSX disease (Haplosporidium)
- Mucus production abnormalities
- Muscular Necrosis / White Muscle Disease
- Myriapods Dehydration / Desiccation
- Myriapods Fungal Infection
- Myriapods Mite Infestation
N (5 conditions)
Back To TopO (8 conditions)
Back To TopP (51 conditions)
Back To Top- Paint fumes / Chemical exposure
- Parasites
- Parasitic Barnacles (Sacculina - Crabs)
- Parasitic copepods
- Parasitic dinoflagellates
- Parasitic flatworms / Trematodes
- Parasitic fly larvae (Acroceridae)
- Parasitic fly larvae (Sciomyzidae)
- Parasitic Isopods
- Parasitic snails
- Parasitic wasps (Evania - colony threat)
- Pedipalp damage
- Pesticide exposure
- pH extremes / pH shock
- pH fluctuation
- pH shock
- pH Shock / pH Instability
- Phasmids Anorexia / Not Eating
- Phasmids Bacterial Infection
- Phasmids Dehydration
- Phasmids Dysecdysis / Stuck Molt
- Phasmids Entomopathogenic Fungi
- Phasmids Fungal Infection
- Phasmids Humidity-Related Molt Failure
- Phasmids Incomplete Molt
- Phasmids Leg Loss / Autotomy
- Phasmids Limb Regeneration Issues
- Phasmids Mite Infestation
- Phosphate Issues
- Pinched mantle (Tridacna clams)
- Pinching injuries from tank mates
- Planaria (predatory on eggs/juveniles)
- Poor Growth
- Poor nymph survival
- Poor ventilation
- Porcelain disease (Thelohania)
- Post-molt death
- Post-molt stress syndrome (PPS)
- Post-molt vulnerability issues
- Post-purchase syndrome (PPS)
- Pre-molt lethargy (normal but prolonged)
- Predation (by fish, crabs)
- Predation (by fish, crabs, etc.)
- Predation injuries
- Predation injuries (from live prey)
- Premature molt interruption
- Premature senescence
- Protozoan infection
- Puncture wounds
- Pupation failure
- Pyramidellid snails (parasitic)
Q (1 condition)
Back To TopR (23 conditions)
Back To TopS (57 conditions)
Back To Top- Salinity fluctuations
- Salinity issues (marine)
- Salinity shock
- Salt exposure
- Scorpion Anorexia / Refusal To Eat
- Scorpion Bacterial Infection
- Scorpion Dehydration
- Scorpion Desiccation
- Scorpion Dysecdysis / Stuck Molt
- Scorpion Fall Injuries
- Scorpion Fungal Infection / Mycosis
- Scorpion Impaction
- Scorpion Incomplete Molt
- Scorpion Leg Loss
- Scorpion Mite Infestation
- Scorpion Nematode Infection
- Scorpion Stress-Related Issues
- Scutariella japonica (temnocephalan parasite)
- Sedimentation / Burial
- Segment damage
- Self-cannibalism
- Shell abnormalities
- Shell damage / Cracks
- Shell damage / Test damage
- Shell deformities
- Shell disease
- Shell disease / Burn spot disease
- Shell disputes / Shell fights
- Shell Fit Problems
- Shell flaking / Peeling
- Shell holes
- Shell switching stress
- Shell thinning (calcium deficiency)
- Shipping stress
- Short lifespan issues
- Siphon damage
- Siphon damage (in applicable species)
- Skin abrasions
- Skin ulceration
- Slow tissue necrosis (STN)
- Soft water (low mineral content)
- Spawning stress
- Spine loss
- Spinneret damage
- Spiral deformity
- Splitting stress
- Starvation
- Starvation (insufficient algae/food)
- Stinging other corals
- Stress (handling, vibration, light)
- Stress (improper handling, vibration)
- Stress-related death
- Substrate Impaction
- Substrate issues
- Substrate issues (too wet/dry)
- Suffocation (no gill moisture)
- Surface molting (dangerous)