| Species | Fish |
|---|---|
| Origin | Brazil, Colombia, Venezuela (Amazon and Orinoco basins) |
| Size Category | Nano |
| Category | Fish |
| Original Purpose | Ornamental |
| Body Length | 4–5 cm |
|---|---|
| Lifespan | 3–8 years |
| Senior Age Threshold | 6 years |
| Exercise Needs | Intermediate care level |
|---|---|
| Grooming | Omnivore |
| Annual Exam Focus | Compatible: Corydoras catfish, Rasboras, Other tetras, Dwarf cichlids, Discus, Plecos, Otocinclus, Dwarf Pencilfish, Peaceful barbs, Dwarf Gourami |
| Routine Care | Incompatible: Large cichlids, Angelfish, Silver Dollar, African cichlids, Large carnivores, Cold water fish like Panda corydoras |
| Condition | Onset Stage | Risk | Hereditary | Screening |
|---|---|---|---|---|
| Ich (White Spot Disease) | adult | high | No | N/A |
| Fin Rot | adult | medium | No | N/A |
| Columnaris (Cottonmouth Disease) | adult | high | No | N/A |
| Dropsy | adult | high | No | N/A |
| CHIC Required Tests | Difficult, egg scatterers |
|---|---|
| Recommended DNA Tests | Hemigrammus bleheri |
| Water Temperature | 22-29°C |
|---|---|
| pH Range | pH 5.5-7.5 |
| Water Type & Tank | Freshwater, Min tank: 75L |
| Diet | Omnivore |
| Common Issues | Difficulty: Intermediate. Temperament: Peaceful, schooling |
| Locomotion | Tight schooling behavior, Changing directions as a flock, Swimming in middle to bottom regions, Active swimming back and forth, Opportunistic feeding on small particles |
|---|---|
| Social | Peaceful, schooling |
| Stress/Displacement | Pale or loss of red nose color, Hiding, Clamped fins, Lethargy, Rubbing against objects, Rapid breathing |
| AI-Trainable Signals | Red nose coloration intensity changes, Tight schooling formation, Darting movements, Pale nose when stressed, Playing dead behavior when newly introduced |
|---|---|
| Context-Dependent Vocalizations | Pale or loss of red nose color, Hiding, Clamped fins, Lethargy, Rubbing against objects, Rapid breathing |
| Interspecies Communication | Water type: Freshwater, pH: 5.5-7.5 |