Oplegnathus punctatus (Temminck & Schlegel, 1844)
Spotted knifejaw
Rock porgy,  斑石鯛,  斑鯛,  硬殼仔,  黑嘴
Oplegnathus punctatus
photo by Randall, J.E.

Family:  Oplegnathidae (Knifejaws)
Max. size:  86 cm TL (male/unsexed); max.weight: 12 kg
Environment:  reef-associated; marine; depth range 3 - 135 m, oceanodromous
Distribution:  Pacific Ocean: Central Honshu, Japan to the South China Sea (Ref. 559). Also known from Hawaii (Ref. 7490). Reported in Norfolk Island (Ref. 89275).
Diagnosis:  Dorsal spines (total): 11-11; Dorsal soft rays (total): 14-16; Anal spines: 3-3; Anal soft rays: 11-13
Biology:  Inhabit rocky and coral reefs. Juveniles associate with drifting seaweed (Ref. 12114, 12115, 58302). Benthopelagic (Ref. 58302).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless
Country info:  Reported from the Penghu Islands (Ref. 55073), Yehliu (rare) (Ref. 43538) and Kuei-ho harbor, Wan-li (Ref. 43539). The first successful larviculture in Taiwan occurred in 1994 (Ref. 40297). Also Ref. 47843.


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