ARIIDAE Arius oetik, 16.6 cm SL (photo by Seishi Kimura) Arius oetik, 14.2 cm SL (from Gulf of Thailand; photo by Seishi Kimura) Arius oetik Bleeker, 1846 Lowly Catfish D I, 6-7; A 15-19; P1 I, 10-11; P2 6; GR 4-6 + 9-12. Body elongated, compressed. Head depressed; head shield smooth anteriorly, somewhat granulated posteriorly; dorsomedian groove short, not reaching anteriorly to level of posterior margin of eye. Snout prominent. Palatal teeth short, conical, tips blunt or sharp, on a single pair of small triangular patches, located just posterior to upper oral valve. Inner gill rakes present on all gill arches. Lateral line bifurcates behind caudal fin base. Color: body silvery; brownish dorsally; all fins somewhat dusky; adipose fin pale without dark marking. Size: maximum length 23 cm SL. Distribution: Andaman Sea, Gulf of Thailand through Malay Peninsula and Sumatra to Java and Kalimantan. Remarks: inhabits coastal waters and estuaries.