The threadfin cardinalfish or bluestreak cardinalfish, Zoramia leptacantha,[1] it is one of the cardinalfishes found in the Red Sea and off Mozambique Island to Samoa and Tonga, north to Ryukyu Islands, and south to New Caledonia and Micronesia.

[2] A translucent fish with vertical iridescent blue lines on the head and front of body, it grows up to 6 cm in length.

In juveniles, the blue lines are missing.

Adults occur in small aggregations from 1 to at least 12 m deep, usually close to branching coral, in sheltered bays and lagoons.

This order Gobiiformes (goby) related article is a stub.