This is a slimmer species than E. bicolor. Its body color is overall grayish brown to black, with an occasional violet iridescence. The fins are orange-red or red. In males the rear portion of the anal fin is black. A short dark band extends from the gill cover through the eye. Specimens offered as Labeo erythrurus are generally believed to be either mature E. frenatus or a local variety. A commercially produced albino morph is widely available.
Other common names
- Ruby Shark, Red-finned Shark
- Labeo frenatus, Labeo erythrurus
- Cyprininae (classified as Garrinae by some authors)
- Up to 6in (1 5cm), but usually quite a bit smaller.
- A loner that stakes out its own territory and will become aggressive toward other members of its species. This intolerance can be extended to other species as well, particularly by older specimens.
- Wide range of foods accepted; sinking formulations and a vegetable component are recommended.
- Spacious, with shelters or caves provided. A fine-grained substratum is recommended, as is soft to medium-hard water. Temperature range: 72-79°F (22-26°C); higher for breeding.
- Infrequent in aquaria; no documented accounts appear to be available.