Can Puntius sophore breed artificially under controlled conditions? Tracing the life cycle of Puntius sophore through artificial captive breeding

Abstract

The development of new strategies for breeding indigenous fish species is of utmost importance in the wake of unfavorable weather events, as a result of climate change. Therefore, an attempt has been made to achieve artificial breeding of an indigenous barb, Puntius sophore. Two groups of juvenile fish, collected from the wild, were reared till sexual maturation. One group was reared under a natural photothermal regime and the other was reared under strictly controlled conditions with photothermal stimulation till sexual maturation and subsequently, hormonal stimulation with OVAFISH was also done for inducement of spawning. The spawning efficiencies were analyzed and the results in terms of latency period (6.74 Hrs), ovulation rate (92.2 %), fertilization rate (90.6 %), hatching rate (89.9 %), and spawning efficiency coefficient (Se) (0.828) were found better in Puntius sophore reared under the indoor controlled condition with photothermal manipulation and hormone administration compared to the group of fish which was reared under a natural photothermal with a hormonal stimulation. The results of this study demonstrate the captive artificial breeding of Puntius sophore spawners reared under a natural photothermal regime and controlled photothermal regime in indoor conditions. The outcome of the present study can be used for developing key strategies for a climate smart aquaculture for fish farmers.