Threespine bass (Caraibops trispinosus), first described by Mochizuki & Sano, 1984 is a small fish. Adults typically reach 11.50 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 36 to 550 metres. It occurs in Deep-water waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.
Dorsal spines (total): 8 - 9; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 8 - 9; Vertebrae: 25. This species is distinguished by having an elongate body, slender head; clearly separated first and second dorsal fins; pelvic spines with anterior edge distinctly serrated; anterior edge of second spine of first dorsal and anal fin smooth; A III; D1 XIII; 46-51 pored lateral line scales; weakly serrated posterior margin of preoperculum; both jaws with a single row of teeth; canines long, sharp, well separated; upper jaw with 3-4 prominent fanglike teeth anterior to the vomer and without large canines on premaxillary; lower jaw with 2 small canines at front, followed by 3-5 large canines; 2 canines on vomer; villiform teeth on palatine .: fusiform / normal; Cross section: compressed.
Behavioural data for Threespine bass is currently being reviewed.
Marine; bathydemersal; depth range 36 - 550 m . Deep-water; 13°N - 6°N
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