Spratellomorpha bianalis (Bertin 1940)

Presumed marine or estuarine (Ref. 188), but its reported presence in Port Tudor, an area where estuarine conditions prevail, would indicate that the species may be confined to estuaries (Ref. 117486) and it is found in fresh and brackish water in Madagascar (Ref. 13333, 117576).

Diagnosis: Body elongate, a little compressed; belly rounded, without pre-pelvic and post-pelvic scutes, but a pelvic scute present with slender vertical arms; gillrakers 26-31; pelvic fin with 1 unbranched and 7-8 branched finrays, well before dorsal fin origin; last two anal finrays separate, forming a distinct little finlet (Ref. 188, 117486, 121271). This species is distinguished from other clupeids by the presence of 2 anal fins, of which the second anal fin comprises 2 finrays (Ref. 188, 121271).Description: Body elongate, a little compressed, belly rounded (Ref. 188, 117486). Body depth 15-22% of standard length; head length 25.2-27.7% of standard length (Ref. 117486, 118219, 121271). Pre-dorsal distance 51-58% of standard length; pre-anal distance 68-75% of standard length; pre-pelvic distance 47-55% of standard length (Ref. 117486, 118219, 121271). Snout pointed, a little shorter than eye diameter; jaws subequal, lower projecting slightly; maxilla longer than snout, reaching vertical through anterior border of the eye; a single supra-maxilla, expanded posteriorly, almost equal in length to maxilla in depth, with a narrow anterior shaft; a single row of conical teeth on pre-maxilla and maxilla (Ref. 117486, 118219). Gillrakers 26-31 on lower part of first gill arch (Ref. 188, 117486, 121280). Dorsal fin with 14-17 rays, dorsal fin origin a little nearer caudal fin base than tip of snout; a double anal fin, first part with 14-16 rays and second part with 2 rays, the last two rays of anal fin separated from others by a gap equal to three rays, anal fin origin nearer to pelvic fin base than to caudal fin base; pectoral fin with 1 unbranched and 11-12 branched rays; pelvic fin with 1 unbranched and 7-8 branched rays; pelvic fin origin in front of dorsal fin origin, nearer to anal fin base than to pectoral fin base (Ref. 94656, 117486, 118219, 121271). Scales: 41-45 scales in a longitudinal series; 8-9 transversal scales (Ref. 117486, 118219, 121271). Abdominal scutes entirely absent, but a pelvic scute with slender lateral arms present (Ref. 188, 117486). Branchiostegal rays 6 (Ref. 121271). Vertebrae 45-46; with 16-17 caudal vertebrae (Ref. 118219, 121271).Colouration: Fresh specimens mainly translucent; dorsal and lateral surfaces very light brown, peritoneum white; a faint, poorly defined, silvery to golden lateral band from operculum to caudal base, widest behind dorsal base, narrower than pupil of eye; a few brown spots on head between orbits, post-orbital surface of head brown; two parallel rows of minute black spots on median dorsal surface from the nape to the dorsal origin and continued from the last dorsal ray to the caudal base; snout and tip of lower jaw faintly yellowish with a few small dark spots; lower jaw, sides of head and operculum silvery; bases of dorsal and caudal fin yellowish, caudal rays with minute orange spots and a few scattered melanophores; two black lines on caudal base and a black streak on the upper border of the caudal peduncle; a row of black spots along base of anal and first two rays of pectoral fin with a few melanophores, rest of fins colourless (Ref. 117486). Preserved specimens with dorsal side brown; a faint, poorly defined, silvery midlateral stripe on the flanks from operculum to caudal base; ventral side whitish; with a sigmoid spot at the base of the caudal fin (Ref. 117486, 118219, 121271).

Dorsal spines (total): 0; Dorsal soft rays (total): 14 - 17; Analspines: 0; Analsoft rays: 16 - 18; Vertebrae: 45 - 46

Presumed marine or estuarine (Ref. 188), but its reported presence in Port Tudor, an area where estuarine conditions prevail, would indicate that the species may be confined to estuaries (Ref. 117486) and it is found in fresh and brackish water in Madagascar (Ref. 13333, 117576). Maximum total length 6.0 cm (Ref. 121271).

fisheries: subsistence fisheries

Spratellomorpha bianalis és una espècie de peix pertanyent a la família dels clupèids i l'única del gènere Spratellomorpha.

The two-finned round herring (Spratellomorpha bianalis) is a species of fish in the family Clupeidae. It is endemic to Madagascar. Its natural habitat is rivers. It is the only species in its genus.

(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});

Spratellomorpha bianalis Spratellomorpha generoko animalia da. Arrainen barruko Clupeidae familian sailkatzen da.

Spratellomorpha bianalis é uma espécie de peixe da família Clupeidae.

É endémica de Madagáscar. Os seus habitats naturais são: rios.

Spratellomorpha bianalis là một loài cá thuộc họ Clupeidae. Nó là loài đặc hữu của Madagascar. Môi trường sống tự nhiên của nó là các con sông.

雙鰭似黍鯡為輻鰭魚綱鲱形目鲱科的其中一種，分布於西印度洋的肯亞及馬達加斯加海域，棲息深度可達50公尺，體長可達4.5公分，棲息在沿海，可做為食用魚，生活習性不明。

Presumed to be a marine or estuarine species. Apparently rare. Restricted to Mombasa and Madagascar.