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- EnglishName: Blue-greenchromis
- Local Name : Nilamehi
- Size : Max. 8 cm
- Family: POMACENTRIDAE
- Order : Specimen :
- Distinctive Characters: Dorsal fin with 12 spines and 9-10 rays. Anal fin with 2 spines and 10-11 rays. Pectoral rays 17-18. Body depth 2.0-2.1 in standard length. Suborbital bones scaled, with lower margins smooth. Preopercular margin smooth. Caudal fin forked.
- Colour: Blue-green shading to whitish ventrally. A faint dusky spot at upper base of pectoral fin. A blue line from front of snout to eyes. Nesting male yellow with black dorsal.
- Habitat and Biology: Common on shallow lagoon reefs at depths of 1.5-12 m. Forms large aggregations, typically feed on plankton above rich beds of live coral.
- Distribution: Indo-Pacific.
- Remarks: Chromis viridis is used as a bait for pole and line tuna fishery. It is used most commonly on the eastern side of the Maldives during the north east monsoon, and on the western side during the southwest monsoon. Previously recorded as C. caeruleus (as in Catalogue of Fishes of the Maldives, Vol. 1, page 116), but this name is now invalid.