Evaluation of reproductive performance in indigenous endemic ornamental fish Sahyadria denisonii using hormones under captive environment

ABSTRACT

Aim: The present study aimed to develop the hatchery technology for production of indigenous ornamental fish Sahyadria denisonii to ensure year round seeds and for conservation of natural resources.Methodology: In the present investigation, brooders were collected from wild, acclimatized to hatchery condition and enriched under captive environment. The mature brooders were injected with three different synthetic hormones namelyt. Human chorionic gonadotropin (HCG), Ovatide and WOVA-FH at different doses (0.3, 0.5, 0.7 and 0.9 ml/kg of female and half a dose to male). Results: Fishes did not release their gametes naturally after inducement. Hence, artificial fertilization was carried out after 16 hrs of injection. Among the synthetic hormones used WOVA-FH @ 0.5 ml kg-1 of female and half a dose to male showed better breeding performance in terms of number of spawned eggs, fertilization rate (75.3%) and hatching rate (83.0%). Interpretation: Synthetic hormone WOVA-FH, human chorionic gonadotropin (HCG) and ovatide to female and male through artificial fertilization can be adopted for captive breeding of Indigenous endemic ornamental fish Sahyadria denisonii.