Longfin Horse-Mouth — a Cyprinidae from eastern Chinese streams, mostly peaceful community fish. Reaches 6.8–9.9 cm; singly or in small groups depending on temperament. 10–20 °C.
Care parameters
Water temperature
10–20 °C
pH
6.5–7.5
GH hardness
5–15 dGH
Adult length
6.8–9.9 cm
Minimum tank
118 L
Water layer
Bottom-dwelling
Difficulty
Moderate
Temperament
Mostly peaceful community fish
Origin
eastern Chinese streams
Species overview
Opsariichthys evolans is a Cyprinidae from eastern Chinese streams. Its calm temperament and broad diet make it one of the more forgiving residents of a community tank. It lives on the bottom. Adults reach 6.8–9.9 cm. Singly or in small groups depending on temperament. Stable water, regular partial changes and a varied diet cover nearly everything it needs. Maintain 10–20 °C at pH 6.5–7.5. Water quality and diet matter more than décor.
Native biotope
Habitat
Clear streams and rivers over gravel
Flow
Moderate, well-oxygenated current
Dissolved O₂
Appreciates well-oxygenated water
Aquascape & hardware
Substrate
Fine gravel and sand
Hardscape
Water-worn stones and driftwood
Plants
Hardy rooted plants along the margins
Temperament, diet & tankmates
Schooling
Singly or in small groups depending on temperament
Diet
Accepts quality flakes, granules and frozen foods
Recommended tankmates
Robust schooling cyprinids — Add activity without conflict