Parosphromenus opallios

Dark bands on the caudal and dorsal fins; the rear dorsal fin usually lacks the distinct black eyespot seen in sumatranus.

Needs very soft, acidic water.

Social behaviour and territory

Does not form tight schools. Pairs can be used for breeding; groups need caves and cover. Watch nest guarding and subordinate fish.

Offer tiny, suitably sized live foods. Dry food is unreliably accepted; confirm the fish actually eat.

Sources