Butis butis, NSMT-P 66105, 7.4 cm SL
Butis butis (Hamilton, 1822)
Duckbill sleeper
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D VI - I, 8; A I, 8; P1 18 - 19; LR 29 - 31; PDS 25 - 33. Body elongate, subcylindrical and compressed posteriorly. Head depressed; snout elongate and depressed, duck-bill shaped; jaws large, extending posteriorly to below anterior margin of eye; lower jaw protruding beyond upper jaw; teeth on outermost row of jaws slightly enlarged (but not canine-like). Pelvic fins widely separated. Cheek, operculum and interorbital with ctenoid scales; scales present between eye and interorbital bony ridge; small auxiliary scale between large body scales. Color: blackish brown, with several indistinct, longitudinal black lines on body; base of pectoral fin with a distinct large black spot edged with two vivid red spots anteriorly. Size: 14.5 cm. Distribution: Indo-West Pacific. Remarks: found in tidal estuaries. Carnivorous. Often marketed fresh.
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