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| Common names: snook (English), gualaje (Espanol), róbalo (Espanol) |
Centropomus armatus Gill, 1863
Long-spine snook, Armed snook
Body oblong elongate, compressed; upper head profile distinctly concave; mouth large and protractile, lower jaw protruding; margin of preopercle serrated; gill rakers 20-25 (usually 21-24); dorsal rays VIII + I, 10 (rarely 11); anal rays III, 6 (rarely 7), second anal spine very stout, much longer than third, reaching to or beyond level of caudal base when depressed and clearly exceeding longest anal soft ray; pelvics insert a little behind pectoral base, with I strong spine and 5 rays; pectoral rays 14-16 (usually 15); lateral-line scales 49-57 (usually 51-54); scales around tail base 20-25 (usually 22-24); 6-7.5 scales between lateral line and 2nd dorsal fin.
Overall silvery with black lateral line; base of pectoral fin blackish.
Size: to at least 37 cm.
Inhabits bays, estuaries, and lower reaches of freshwater streams.
Depth: 0-25 m.
The mouth of the Gulf of California to northern Peru.