Opisthopterus valenciennesi Bleeker, 1872
Slender tardoor
photo by FAO

Family:  Pristigasteridae (Pristigasterids)
Max. size:  20 cm SL (male/unsexed)
Environment:  pelagic-neritic; brackish; marine
Distribution:  Indo-West Pacific: Java Sea, Singapore north to East China Sea at Foochow.
Diagnosis:  Dorsal spines (total): 0-0; Anal spines: 0-0; Anal soft rays: 54-65. Belly convex in front, with 30 to 33 scutes. Mouth pointing obliquely upward. Pectoral fin distinctly shorter than head; dorsal fin small, well behind midpoint of body; anal fin long, its origin well before dorsal fin origin.
Biology:  Found along shores and in estuaries. Probably similar to O. tardoore, but more specimens and data needed.
IUCN Red List Status: Data deficient (DD); Date assessed: 28 February 2017 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Binohlan, Crispina B. - 17.10.90
Modified by: Bailly, Nicolas - 16.07.13
Checked by: Binohlan, Crispina B. - 27.07.94

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