| Clupeidae (Herrings, shads, sardines, menhadens) |
| 9 cm SL (male/unsexed) |
|
pelagic-neritic; marine; depth range 0 - 50 m |
| Southwest Atlantic: southern Brazil (estuary of the Lagoa dos Patos) and Uruguay to at least BahÃa Blanca, Argentina; some of the more southerly records (even to the Beagle Channel) must refer to Sprattus fuegensis. |
|
Dorsal spines (total): 0-0; Dorsal soft rays (total): 18-19; Anal spines: 0-0; Anal soft rays: 12-23. Belly sharply keeled. Flanks silvery without a distinct silver stripe (cf. Platanichthys). Distinguished from R. melanostoma of freshwaters by having more dorsal and pectoral fin rays and total gill rakers; from small Sardinella and Harengula by the evenly rounded hind margin of the gill opening; and from Sprattus fuegensis by having i 6 pelvic fin rays. |
| Forms schools in coastal waters, apparently inshore but not entering freshwater. |
|
Least Concern (LC); Date assessed: 06 March 2017 Ref. (130435)
|
| harmless |
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