Triso dermopterus (Temminck & Schlegel, 1842)
Oval grouper
Triso dermopterus
photo by To, W.-L.

Family:  Serranidae (Sea basses: groupers and fairy basslets), subfamily: Epinephelinae
Max. size:  68 cm TL (male/unsexed)
Environment:  demersal; depth range 22 - 103 m
Distribution:  Western Pacific: Korea, Japan, Taiwan, Hong Kong, China, off eastern Australia (between 25°S-32°S), and off the coast of Western Australia (south of 19°30'S).
Diagnosis:  Dorsal spines (total): 11-11; Dorsal soft rays (total): 18-21; Anal spines: 3-3; Anal soft rays: 9-12. Distinguished by the following characteristics: dark brown or violet-black body color, darker fins; oval body, compressed, depth contained 2.4-2.7 times in the standard length; head length 3.0-3.4 times in SL; distinctly convex dorsal head profile; nostrils subequal in juveniles, diameter of posterior nostrils twice that of anterior nostrils in 56 cm SL adults; small mouth, oblique, pair of short canines at front of each premaxilla (Ref. 89707).
Biology:  An anti-tropical species. Occurs on rocky or soft (silty-sand or mud) bottoms. The young have been observed to feed on zooplankton in the water column; feeding of adults has not yet been discovered.
IUCN Red List Status: Least Concern (LC); Date assessed: 06 April 2017 Ref. (120744)
Threat to humans:  harmless
Country info:   

Entered by: Capuli, Estelita Emily - 12.02.93
Modified by: Kesner-Reyes, Kathleen - 26.10.05
Checked by: Capuli, Estelita Emily - 03.05.94

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