Laubuka lankensis (Deraniyagala 1960)

This species is distinguished from its congeners by the following set of characters: lateral line complete with 33-36 + 1-2 pored scales; scales on transverse line ½ 6/1/2-2 ½ and on caudal peduncle ½ 4/1/1 ½ scales; body depth 27.2-29.8% SL; pelvic-fin length 20.5-25.2 %SL in adults, and longer in juveniles, but not extending beyond origin of anal fin; tuberculation on lower jaw dense, reaching backwards beyond level of anterior orbit (Ref. 75997). It is distinguished from its Sri Lankan congeners by having a rounded cleithral spot whose greatest dimension is less than the eye diameter; distinct neuromast fields on the lower jaw; unbranched pelvic-fin ray when adpressed usually reaching beyond the anal-fin origin; usually circumpeduncular scales 12-14 and lateral-line scales 33-36; differs from L. varuna in having the round (vs. vertically elongate) cleithral spot (Ref. 127713).Description: Dorsal fin with 2 simple and 8½ or 9½ branched rays; anal fin with 3 simple and 16½ -20½ branched rays; pectoral fin with one unbranched and 10 or 11 branched rays; and pelvic fin with 1 unbranched and 5 branched rays (Ref. 75997).

Dorsal soft rays (total): 10 - 11; Analsoft rays: 19 - 23; Vertebrae: 35

Occurs in rivers and streams (Ref. 75997). The type locality, Kalu Ganga, has a gravel-pebble bed with fast-flowing water strewn with boulders (Ref. 75997). Sympatric with other cyprinids such as Puntius srilankensis, Puntius martenstyni and Labeo fisheri (Ref. 75997).

Laubuka lankensis, also known as the Sri Lanka blue laubuca, is a cyprinid fish species endemic to Sri Lanka. It is a freshwater species widely distributed throughout the lowland dry zone of the island. It grows to 5.8 cm (2.3 in) standard length.

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Laubuca lankensis Laubuca generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.