Rasbora johannae (Teleostei: Cyprinidae), a new species of the R. trifasciata-complex from Kalimantan, Indonesia

Siebert D.J., Guiry S.

Date de parution: décembre 1996
Volume: 20
Number: 4
Pagination: 395-404
Editeur: Société Française d'Ichtyologie
doi: https://doi.org/10.26028/cybium/1996-204-005
Résumé

Rasbora johannae, a new species of the R. trifasciata-complex is described from small forest streams deep within the Barito River basin, Kalimantan (Bornea), Indonesia. The new species possesses: a vivid dark lateral stripe terminating in an obvious precaudal blotch located largely behind the end of the hypural plate, and which covers the bases of the middle caudal fin rays; median fins with colourless interradial membranes; an incomplete lateral line (modal pored scale count 20); and a modal vertebrae count of 32. Discriminant functions analysis of quantitative data sets of morphometric, vertebral, and scalation variables demonstrate the new species is broadly different from other members of the R. trifasciata-complex from eastern Borneo. Rasbora trifasciata, R. hubbsi, R. rutteni, and R. meinkeni all possess a dark lateral stripe similar to that of the new species. It is suggested that these species are closely related among the R. trifasciata-complex.

Mots-clés: Cyprinidae - Indonesia - New species - R. trifasciata-complex - Rasbora johannae - Taxonomy
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