Sardinella rouxi (Poll, 1953)
Yellowtail sardinella
Sardinella rouxi
photo by Wirtz, P.

Family:  Clupeidae (Herrings, shads, sardines, menhadens), subfamily: Dorosomatinae
Max. size:  16 cm SL (male/unsexed)
Environment:  pelagic-neritic; brackish; marine; depth range 0 - 50 m,
Distribution:  Atlantic Ocean: Eastern Atlantic Ocean from Senegal southward to Congo, possibly to northern Angola (Ref. 188, 5286, 81269, 81631).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 16-19; Anal spines: 0-0; Anal soft rays: 16-21. Diagnosis: Body moderately deep, belly fairly sharply keeled (Ref. 188). Lower gillrakers 30-40 (Ref. 188). A black or golden spot behind gill opening; upper part of pectoral fin dusky; caudal fin pale yellow with dusky hind margin (Ref. 188). Sardinella rouxi resembles S. maderensis, which has more gillrakers and a grey caudal fin, its tips almost black (Ref. 188). It is distinguished from small S. aurita by having 1 unbranched and 7 branched pelvic fin rays vs. 1 unbranched and 8 branched in S. aurita, and no black spot on hind part of gill cover (Ref. 188). Description: Body moderately deep (Ref. 188, 81269, 81631). Lower limb of first gill arch with 30-40 gill rakers (Ref. 81269, 81631). Dorsal fin with 16-19 fin rays; anal fin with 16-21 fin rays; pelvic fin with 8 fin rays (Ref. 81269, 81631). Scales cycloid: 42-45 in a longitudinal series to the base of caudal fin; 13 transversal scales in front of ventral fins; 16-19 prepelvic and 12-14 postpelvic mid-ventral scutes (Ref. 81269, 81631, 86940). Colouration: Ground colour silvery with golden reflections; dorsal areas, snout and chin greyish-brown; a black or golden spot behind gill opening (Ref. 81269, 81631). Upper part of pectoral fins dark; caudal fin brownish-yellow, with a darker posterior margin (Ref. 81269, 81631).
Biology:  Sardinella rouxi is found in inshore waters and along beaches, forming schools (Ref. 188).
IUCN Red List Status: Data deficient (DD); Date assessed: 05 March 2018 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Binohlan, Crispina B. - 17.10.90
Modified by: Boden, Gert - 16.06.15
Checked by: Binohlan, Crispina B. - 14.03.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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