Twospot surgeonfish (Ctenochaetus binotatus)

Scientific name: Ctenochaetus binotatus Randall, 1955

The Twospot surgeonfish (Ctenochaetus binotatus) is a marine fish of the family Acanthuridae. In the aquarium it needs water at 24–26°C (75–79°F).

Twospot surgeonfish care at a glance

Temperature: 24–26°C (75–79°F)

Biology

Dorsal spines (total): 8; Dorsal soft rays (total): 24-27; Anal spines: 3; Anal soft rays: 22 - 25. Prominent black spot at the rear base of dorsal and anal fins; adults with a bluish ring around the eye (Ref 1602). Dorsal and anal fins dark brown. Caudal fin brown in adults, yellow in young. Edge of lips smooth. Upper teeth usually with 5 denticulations (not including tip). Anterior gill rakers 23-29 (Ref 42056).

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Ctenochaetus binotatus
Family: Acanthuridae (Surgeonfishes, tangs, unicornfishes)
Order: Perciformes (Perch-like fish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 22.0
Depth range: 8–53 m (26–174 ft)
Environment: Marine; reef-associated; depth range 8 - 53 m, usually 10 - 50 m
Climate: Tropical
Distribution: Indo-Pacific: East Africa to the Tuamoto Islands, north to southern Japan, south to central New South Wales (Australia) and New Caledonia. Not known from the Red Sea, Gulf of Oman, the Gulf, the Hawaiian Islands, Marquesas, Rapa, Pitcairn Islands, and Easter Island.
Conservation status (IUCN): Not Evaluated
Threat to humans: Other
Uses: Aquarium: commercial
Resilience: High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)