Body small, slender and compressed; with pelvic scutes from base of pelvic fin to anus; head small; snout blunt; mouth terminal and small; barbell absent; eyes large and located in lateral-center of head; scales large, without lateral line but with 30-32 scales along lateral axis of body; dorsal fin short and small, without hard unbranched rays; pectoral and pelvic fins short; caudal fin forked and lobes round. Color of body yellowish brown, bluish on back and white on belly; median axis of body with reddish yellow narrow zone, blue-black lines above the zone and shining blue-green lines under it; base of caudal fin with a large blue spot and the spot with a golden edge; fins pale white.

It is a small fish living in subtropical regions and in China the fish lives in river ditches and rivulets in the south. It likes to stay in clear shallow water with thick growth of weeds.

香港