Family : Acanthuridae (Surgeonfishes, tangs, unicornfishes) , subfamily: Acanthurinae
Order : Perciformes  (perch-likes)
Class : Actinopterygii (ray-finned fishes)
Fishbase Name : Bluelined surgeonfish
Fish Name : Acanthurus nigroris
Max size : 25.0 cm TL (male/unsexed; Ref. 2334)
Environment : reef-associated ; depth range 1 - 90 m
Climate : tropical; 28°N - 24°S
Global Importance : aquarium: commercial
Resilience: High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)Distribution : Indo-Pacific: Aldabra and Seychelles to the Hawaiian, Marquesan and Tuamoto Islands; throughout Micronesia.
Diagnosis : Dorsal spines (total): 9-9; Dorsal soft rays (total): 24-27; Anal spines: 3-3; Anal soft rays: 23-25. Color drab dark brown; spots on body located at the rear base of dorsal and anal fins. Black spot at rear base of dorsal fin not large, its greatest width more than 2 times in eye diameter. White posterior margin of caudal fin very narrow, its width less than 4 times in pupil diameter. No definite black margin around groove of peduncular spine. Body depth 1.8 to 2 times in SL. Maximum standard length about 20 cm (Ref 9808).
Biology : Inhabits clear lagoon and seaward reefs; often in areas with mixed coral, pavement, rubble and sand substrates (Ref. 1602). Benthopelagic (Ref. 58302). Occurs singly or in small groups (Ref. 9710). Feeds on filamentous algae, diatoms and fine algal film of compacted sand (Ref. 1602). Relatively uncommon throughout Micronesia; rare on Great Barrier Reef
Threatened : Dangerous:  
Dangerous : harmless
Coordinator : Randall, John E.
Main Ref : Randall, J.E.. 1956. (Ref. 1920)

India country information
Common Names : [ No common name ]
Status : native
Salinity : marine
Uses : no uses