Rasbora Api

📖 Overview

Inhabits gravel-bottomed mountain streams, moderate flowing turbid rivers, and acidic blackwater peatswamps. Occurs sympatrically with Rasbora jacobsoni, R. truncata, and R. cf. sumatrana in the Kluet and Alas river basins .

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 9; Anal soft rays: 7; Vertebrae: 31 - 32. Can be distinguished from all members of the Rasbora trifasciata-group by the following characters: anteriorly tapering black midlateral stripe extending along the flank from the post-opercular region to the base of the caudal fin and terminating posteriorly at the black basicaudal spot on the base of the caudal fin; cephalic tubercles of males are relatively stout and tall, with the base of the tubercle at the skin surface, and with epithelial cells on the basal surface bearing microgranules.; and a vermilion coloration on the dorsal and caudal fins in life. Differs further from other members in northwestern Sumatra by the following combination of characters: Type I cranial superficial neuromasts (basal plate confluent with the skin surface with no peripheral structure surrounding it); the symphyseal knob of the dentary strongly developed; the conspicuous depression on the lateroventral margin of the upper jaw which is notched by a deep lachrymal groove; the first infraorbital (lachrymal) with a posterodorsal process and a concave dorsal margin; the lachrymal region that is peripherally pigmented with an unpigmented central area; the dorsomedial branch of the supraorbital canal toward the posterior margin of frontal; the sphenotic that is exposed dorsal to the supraorbital canal; ten gill rakers on first arch; an axial streak reaching anteriorly to the pectoral girdle; the presence of cephalic tubercles on the ventral surface of lower jaw of both sexes; a transverse scale count anterior to the dorsal-fin origin and pelvic-fin insertion of K4/1/3K; 10 scales around caudal peduncle; a basal reticulation pattern comprised of networks of well-developed chevron-shaped bars on the midlateral surface of the body; the maximum vertical coverage of the basal reticulation of four longitudinal scale rows; and pelvic-fin rays i,7-8 . : fusiform / normal.

🌀 Behaviour

Behavioural data for Rasbora Api is currently being reviewed.

🦐 Diet

Diet information for Rasbora Api is currently being compiled.

🥚 Reproduction

Reproduction data for Rasbora Api is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

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