Overview
The Rainbow Shark (Epalzeorhynchos frenatum) is a freshwater fish from the family Cyprinidae. It thrives at temperatures of 24–27 °C with a pH of 6.5–7.5, requiring a minimum tank size of 200 litres. Territorial bottom dweller with a vibrant red-orange fin coloration. Highly aggressive toward own species and similar-looking fish.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Cyprinidae |
| Genus | Epalzeorhynchos |
| Species | Epalzeorhynchos frenatum |
| Water type | freshwater |
Natural Habitat
Appearance
Behavior
Highly aggressive toward own species and similar-looking fish
| Trait | Value |
|---|---|
| Temperament | Territorial bottom dweller with a vibrant red-orange fin coloration |
| Schooling | No |
| Activity level | active |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 24–27°C (75–81°F) | Use a reliable adjustable heater |
| pH | 6.5–7.5 | Avoid sudden swings |
| Hardness (GH) | soft to medium dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <20 ppm | Manage through regular partial water changes |
| Min. tank | 200L (53 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- Despite the name, Rainbow Sharks are cyprinids, not true sharks
📋 Full Care Guide
Ready to set up a tank for your Rainbow Shark? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Rainbow Shark Care Guide →Related Species
Related Species & Guides
This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.