Family: Percichthyidae
Aucha Perch — a Percichthyidae from Japan, territorial; line-of-sight breaks keep the peace. Reaches 8.2–12.1 cm; a pair claims a territory; give each a defensible cave. 10–23 °C.
Coreoperca kawamebari is a Percichthyidae from Japan. In the wild it prefers river rapids and rocky lakeshores; in the aquarium it stays territorial. Plan on 8.2–12.1 cm of adult fish at 10–23 °C. Related profiles: Coreoperca whiteheadi, Coreoperca loona.
Difficulty: moderate. Territorial; line-of-sight breaks keep the peace. A pair claims a territory; give each a defensible cave.
Hold 10–23 °C and keep it stable — 10–23 °C recorded range. Stable temperate to subtropical.
Full size is 8.2–12.1 cm. Minimum tank: 176 L, with open swimming space along its bottom-dwelling habits.
Omnivore with a protein lean — quality cichlid pellets. Vary the menu — quality flakes or pellets plus frozen or live foods.
Territorial; line-of-sight breaks keep the peace. Recommended tankmates: Other cichlids of similar size and temperament — Balance aggression across the tank. Avoid Delicate planted-tank species — Uprooted and outcompeted.
Its home waters are Japan — river rapids and rocky lakeshores, with moderate to strong current.
Jumping is not a known issue; cover the tank anyway during water changes.
In the aquarium: dedicated pair-bonded spawner; expect fry defence. Breeding colours differ.