Pseudanthias ventralis

The longfin anthias (Pseudanthias ventralis) is a small, colorful species of fish in the subfamily Anthiinae. It is found at reefs at depths of 26–120 m (85–394 ft) in the Pacific, ranging from the Ogasawara Islands in north to the Great Barrier Reef in south, and east to the Pitcairn Islands.

It reaches 7 cm (2.8 in) in length and is pink and yellow (with blue edging to the fins in the male), but there are distinct geographic variations and some prefer to treat the Hawaiian populations as a separate species, P. hawaiiensis (instead of a subspecies, P. ventralis hawaiiensis).

It occasionally makes its way into the aquarium trade, but it is a difficult species to maintain.