Hydrobiologia

, Volume 790, Issue 1, pp 67–81 | Cite as

A new Bagrid catfish species, Rita bakalu (Siluriformes: Bagridae), from the Godavari River basin, India

  • Kuldeep K. Lal
  • Arvind K. Dwivedi
  • Rajeev K. Singh
  • Vindhya Mohindra
  • Suresh Chandra
  • Braj Kishor Gupta
  • Smita Dhawan
  • Joykrushna Jena
Primary Research Paper

Abstract

Rita bakalu, a new species, is described from the Godavari river system in peninsular India. With this finding, the genus Rita is enlarged to include seven species, comprising six species found in South Asia, R. rita, R. macracanthus, R. gogra, R. chrysea, R. kuturnee, R. bakalu, and one species R. sacerdotum from Southeast Asia. R. bakalu is distinguished from its congeners by a combination of the following characters: eye diameter 28–39% HL and 20–22 caudal fin rays; teeth in upper jaw uniformly villiform in two patches, interrupted at the midline; palatal teeth well-developed villiform, in two distinct patches located at the edge of the palate. The mtDNA cytochrome C oxidase I sequence analysis confirmed that the R. bakalu is distinct from the other congeners of Rita. Superficially, R. bakalu resembles R. kuturnee, reported from the Godavari and Krishna river systems; however, the two species are discriminated due to differences in the structure of their teeth patches on upper jaw and palate, anal fin originating before the origin of adipose fin, comparatively larger eye diameter, longer mandibular barbels, and vertebral count. The results conclude that the river Godavari harbors a different species of Rita, R. bakalu which is new to science.

Keywords

Rita Godavari river New species Morphology Cytochrome c oxidase I 

Supplementary material

10750_2016_3019_MOESM1_ESM.doc (282 kb)
Supplementary Table 1 (DOC 282 kb)

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Kuldeep K. Lal
    • 1
    • 2
  • Arvind K. Dwivedi
    • 1
  • Rajeev K. Singh
    • 1
  • Vindhya Mohindra
    • 1
  • Suresh Chandra
    • 1
  • Braj Kishor Gupta
    • 1
  • Smita Dhawan
    • 1
  • Joykrushna Jena
    • 1
  1. 1.National Bureau of Fish Genetic Resources Canal Ring RoadLucknowIndia
  2. 2.Network of Aquaculture Centers in Asia-PacificKasetsart University CampusJatujakThailand

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