| Species | Amphibian |
|---|---|
| Origin | Mexico |
| Size Category | Small |
| Scientific Name | Ambystoma mexicanum |
| Category | Salamander |
| Original Purpose | Laboratory/Companion |
| Husbandry Difficulty | Intermediate |
| Social Needs | Low |
| Weight Range | 0.1–0.3 kg |
|---|---|
| Lifespan | 10–15 years |
| Juvenile Stage Ends | 12 months |
| Senior Age Threshold | 10 years |
| Exercise Needs | Low - aquatic; gentle swimming; walks on bottom |
|---|---|
| Grooming | None - maintain cold clean water; weekly water changes |
| Annual Exam Focus | Gill condition (fluffy=healthy), body condition, skin lesions, limb regeneration status |
| Routine Care | Fully aquatic; 60-68°F (COLD water critical); gentle/no filtration; 20-25% water changes weekly; feed every 2 days |
| Condition | Onset Stage | Risk | Hereditary | Screening |
|---|---|---|---|---|
| Gill Fungus/Bacterial Infection | adult | high | No | N/A |
| Ammonia/Nitrite Poisoning | adult | high | No | N/A |
| Impaction (gravel ingestion) | adult | high | No | N/A |
| Stress-Related Gill Deterioration | adult | high | No | N/A |
| Tumors/Cancer | senior | medium | Yes | N/A |
| Metabolic Bone Disease | juvenile | medium | No | N/A |
| Risk Level | Medium |
|---|---|
| Ideal BCS | 3/9 |
| Visual Cues | Slightly rounded belly normal; not bloated; head wider than body is healthy |
| Daily Activity | 15 minutes |
| Caloric Notes | Earthworms (primary), sinking pellets, bloodworms; feed every 2 days; earthworm = 1 body width |
| Litter Size | 100–1000 |
|---|---|
| Dystocia Risk | Low |
| CHIC Required Tests | N/A |
| Recommended DNA Tests | Color morph genetics (leucistic, wild, melanoid, albino, GFP) |
| Neonatal Weight | 0.5–1 g |
|---|---|
| Growth Notes | Larval throughout life (neoteny); juvenile to adult size 12-18 months; never metamorphoses naturally |
| Vaccine/Health Schedule | No vaccines; water quality is primary health factor; quarantine new animals in separate tank |
| Temperature | 15-20°C (60-68°F) - COLD WATER CRITICAL; above 22°C causes stress/death |
|---|---|
| Humidity | N/A - fully aquatic; water depth 20-30cm; bare bottom or fine sand only (no gravel) |
| UVB Requirement | Not required; dim lighting preferred; avoid direct light (no eyelids) |
| Diet | Earthworms (staple), sinking pellets, bloodworms, blackworms; no live fish (parasites/thiaminase) |
| Common Issues | Gill infections, ammonia poisoning, impaction from gravel, temperature stress, tumors in older animals |
| Anxiety Proneness | Low |
|---|---|
| Top Triggers | High temperatures (above 22°C), bright lights, strong water current, aggressive tank mates, poor water quality |
| Separation Anxiety Risk | None |
| Calming Interventions | Cold clean water, dim lighting, hides (PVC pipes, terracotta pots), gentle/no flow, fine sand substrate |
| Enrichment Needs | Hides, live plants (cold-water tolerant), varied diet, appropriate tank mates, dim lighting |
| Cognitive Dysfunction Risk | Very Low |
| Sociability Score | 3/10 |
| Locomotion | Walking on bottom, gentle swimming, floating at surface, gill flicking |
|---|---|
| Social | Can cohabitate with same-size axolotls; may nip gills/limbs (regenerate); cannibalistic when young |
| Comfort | Fluffy forward-facing gills, gentle walking, resting in hide, calm gill movements |
| Stress/Displacement | Curled gill filaments, forward-curled tail tip, frantic swimming, gill deterioration, refusing food |
| Breed-Specific | Permanently larval (neoteny); remarkable regeneration ability; critically endangered in wild; cold water obligate; iconic pet amphibian |
| Types | Gulping sounds (air swallowing), no true vocalizations |
|---|---|
| Frequency Range | N/A - no vocal communication |
| Tendency | Very Low |
| Primary Modality | Chemical (pheromones), visual (gill posture, body color), tactile (nudging during courtship) |
| Tail/Body Signals | Long finned tail for swimming; tail curl = stress indicator; tail regenerates if damaged |
| Top Problems | Gill nipping between tank mates, floating (stress/gas), substrate impaction |
|---|---|
| Medical Etiology | Gill deterioration from poor water; bloating from impaction; tumors in elderly |
| Fear/Anxiety Etiology | Rapid swimming away, hiding, gill retraction; very docile species overall |
| Frustration Etiology | Floating at surface (may indicate gas/stress); attempting to climb out if water quality poor |
| Learned Behavior | Recognizes feeding time/keeper; hand-feeding possible; responds to movement near tank; target trainable |
| Cognitive Dysfunction | Minimal; consistent gentle temperament; regeneration ability unique |
| AI-Trainable Signals | Gill posture (fluffy forward=happy, curled back=stressed), tail position, color intensity, activity level |
|---|---|
| Context-Dependent Vocalizations | Floating can be normal air gulping OR stress/illness - duration and frequency differentiate |
| Interspecies Communication | Gentle and interactive; hand-feeding builds bond; recognizes keeper; cold water requirement is most common care mistake |