oa African Zoology - Age and growth of the longfin eel, Anguilla mossambica Peters, 1852 (Pisces: Anguillidae) in Transkei rivers

Volume 19, Issue 4
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



Otoliths were successfully used for age determination and growth-rate calculation of the longfin eel, Anguilla mossambica Peters, 1852. The large opaque nucleus of the otoliths represents the leptocephalid stage and probably lasts from one and a half to two years. Thereafter, one opaque and one hyaline zone is deposited on the otoliths per year. A. mossambica in Transkei rivers have a slow growth rate and remain in fresh water for up to 18 years, during which they attain a maximum length of about 1 000 mm.

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