Vanikoro sweeper

Appearance

''Pempheris vanicolensis'' has a compressed body which is deepest at the origin of the dorsal fin, before it tapers markedly towards the tail, mainly on the ventral side, with a narrow caudal peduncle. It normally has a greenish sheen over the back and most of the head. The anal fin shows an obvious black margin, the tip of the dorsal fin is black, and the pectoral fins are yellow lacking any black markings. The body depth is 2.2-2.4 times the standard length and it grows to up to 20 cm in total length. The dorsal fin has 6 spines and 9 soft rays while the anal fin has 3 spines and 31-43 soft rays.

Behavior

''Pempheris vanicolensis'' occurs in shallow water, normally no deeper than 100m, in tropical and subtropical seas often on coral reefs. It is the host of the intestinal nematode ''Rhabdochona Indiana''. It is found in schools in and around sheltered rocky and coral reefs. It shelters under ledges, in caves, harbours and shipwrecks during the day. It feeds on zooplankton foraging high in the water column during the night.