Contact: +91-9711224068
International Journal of Fisheries and Aquatic Studies
  • Printed Journal
  • Indexed Journal
  • Refereed Journal
  • Peer Reviewed Journal


E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2021, Vol. 9, Issue 4, Part A

Natural hybridization between species of the cichlid genus Oreochromis (Cichlidae, Perciformes) in ponds of the low Ruzizi River (DR Congo)


Author(s): Nabintu Bugabanda Noëlla, Safari Rukahusa Ruffin and Muzumani Risasi Donatien

Abstract: Between 1948 and 1975, 3 species Oreochromis niloticus, O. leucostictus and O. macrochir were introduced into the Ruzizi plain, the natural distribution area of the subspecies Oreochromis niloticus edouardianus. Hybridization is observed between these species. The Mann-Whitney U test revealed significant differences between O. niloticus and its hybrids for the number of brachiospines; length of the last dorsal soft ray; and length of the lower jaw; O. macrochir differs from its hybrids in the number of branchiospines and length of the lower jaw; and O. leucostictus differs from its hybrids in the number of scales in the longitudinal line, the upper lateral line, the number of gill rakers, the length of the last dorsal soft ray, the length of the snout and the diameter of the eye. These characteristics are not sufficient to distinguish these three species from their hybrids without recourse to quality characteristics.

DOI: 10.22271/fish.2021.v9.i4a.2519

Pages: 30-36  |  101 Views  11 Downloads

Download Full Article: Click Here

How to cite this article:
Nabintu Bugabanda Noëlla, Safari Rukahusa Ruffin, Muzumani Risasi Donatien. Natural hybridization between species of the cichlid genus Oreochromis (Cichlidae, Perciformes) in ponds of the low Ruzizi River (DR Congo). Int J Fish Aquat Stud 2021;9(4):30-36. DOI: https://doi.org/10.22271/fish.2021.v9.i4a.2519
International Journal of Fisheries and Aquatic Studies