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2 documents found tagged diagnosis [X]
  • Title
    New records of three species of fish in the upper reaches of the Brahmaputra and Surma-Meghna river basins, Meghalaya, India
    Type
    Journal Article
    Description
    Three species of fishes, viz., Bagarius yarrelli, Parambassis lala, listed Near Threatened and Hemibagrus menoda, Least Concern by IUCN, respectively belonging to the families Sisoridae, Ambassidae and Bagridae have been newly recorded from the upper reaches of the Brahmaputra and Surma-Megna river basins of Meghalaya.  Diagnostic characters and brief notes on the habitat ecology of the fishes are given in this paper. 
    Attribution
    Dey S., Manorama M., Ramanujam S. N. (2015). Journal of Threatened Taxa 12(7) pp. 7922-7926; doi:10.11609/jott.2381.7922-7926
  • Title
    Diagnosis and interrelationships of fishes of the genus Channa Scopoli (Teleostei: Channidae) of northeastern India
    Type
    Journal Article
    Description
    Diagnostic characters of nine species of the genus Channa Scopoli of northeastern India are given. Examination of morphological and osteological characters revealed that the fish under study comprised two phylectic groups: marulius and gachua. The Marulius group is characteristic by having a very prominent V-shaped sharp isthmus, cephalic sensory pores arranged in groups, absence of scales on the lower jaw, a sharp prominent spinelike hypurapophysis, more branchial toothplates than epibranchial, and an elongated urostyle. The Gachua group is characterized by a U-shaped isthmus, cephalic sensory pores evenly arranged in a single row, the presence of one or two large cycloid scales on each side of the lower jaw, absence of a sharp prominent spine-like hypurapophysis, absence or presence of one tooth plate in the epibranchial, and absence of an elongated urostyle. An elongated bone is present in between two last hemal spines of all species examined. A key to known species of Channa of northeastern India is also given
    Attribution
    Vishwanath W., Geetakumari Kh. (2009). Journal of Threatened Taxa 2(1) pp. 97-105; doi:10.11609/JoTT.o1788.97-105