Grammatobothus polyophthalmus (Bleeker, 1865)
Threespot flounder
Grammatobothus polyophthalmus
photo by CSIRO

Family:  Bothidae (Lefteye flounders)
Max. size:  21 cm TL (male/unsexed)
Environment:  demersal; marine; depth range 0 - 90 m
Distribution:  Indo-West Pacific: India and off Sri Lanka eastward to the Philippines and the northeastern coast of Australia. Range extends to Okinawa Island, Japan. Also known from the Persian Gulf (Ref. 5999).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 77-86; Anal spines: 0-0; Anal soft rays: 61-71. Eyed side pale brownish, with 3 large, prominent dark ocelli, 1 each above and below pectoral fin, 1 on middle of straight section of lateral line. Head and body with many small, distinct, dark spots and obscure markings along dorsal and ventral body margins. Males with 2 distinct dark markings above upper eye. Dorsal, anal, and pelvic fins on eyed side with indistinct dusky spots and markings. Caudal fin with a pair of marks behind fin base. Pectoral fin on eyed side with broad pale cross bars. Blind side pale. Body deeply ovoid, its depth 1.5 to 1.8 times in SL. Head moderately large, snout shorter than eye, profile deeply notched ahead of interorbital area. Head length3.5 to 4 times in SL. Interorbital region concave, narrow in both sexes. Both eyes on left side of head, front margin of upper eye slightly behind front margin of lower eye. Mouth moderate in size, reaching to or slightly beyond anterior margin of lower eye, length of upper jaw 2.8 to 3.4 times in head length. Teeth in both jaws uniserial. Teeth in upper jaw becoming gradually smaller posteriorly. Teeth of lower jaw about equal in size, similar to anterior teeth of upper jaw. Scales on eyed side ctenoid. Scales on blind side cycloid. Lateral line on both sides of body (Ref 42535).
Biology:  Found in shallow mud, sand, and rubble bottoms of the continental shelf (Ref. 9824). Feeds on benthic animals. Marketed fresh and used in making fish meal (Ref. 9824).
IUCN Red List Status: Least Concern (LC); Date assessed: 05 March 2015 Ref. (130435)
Threat to humans:  harmless


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