Family: Cyprinidae
Korean Slender Gudgeon — a Cyprinidae from Japan. Reaches 11.7–17.2 cm; keep at 18–26 °C.
Squalidus gracilis is a Cyprinidae from Japan. In the wild it prefers clear streams and rivers over gravel; in the aquarium it stays mostly peaceful. Plan on 11.7–17.2 cm of adult fish at 18–26 °C. Related profiles: Squalidus argentatus, Squalidus chankaensis, Squalidus nitens.
A moderate-level species: mostly peaceful; some species nip fins; stable water matters more than fancy equipment.
Aim for 18–26 °C. Room temperature to heated, depending on origin; 18–26 °C typical for the genus.
Adults reach 11.7–17.2 cm; it is bottom-dwelling. Plan for at least 355 litres.
Omnivore; prepared foods with regular vegetable matter. Vary the menu — quality flakes or pellets plus frozen or live foods.
Mostly peaceful; some species nip fins. Recommended tankmates: Similar-sized peaceful community fish — Similar size and water needs. Avoid Much smaller fish — May outcompete or bully tiny tankmates.
Its home waters are Japan — clear streams and rivers over gravel, with moderate, well-oxygenated current.
Jumping is not a known issue; cover the tank anyway during water changes.
Egg-scatterer; no parental care. Males often slimmer and more colourful.