Induced breeding of climbing perch Anabas testudineus using OVASPEC hormone

Climbing perch, Anabas testudineus, is one of the important freshwater fish species with a high economic value. Currently, the climbing perch fish has been cultivated in Indonesia and other Asian countries. But, breeding has not been supported by good hatchery technology, so the availability of high-quality larvae in sufficient quantities has not been resolved. In artificial spawning, hormone injections are often carried out to stimulate the ovulation process in fish. In this study, the OVASPEC was tested for climbing perch. Ovaspec contains the sGnRHa hormone and anti-dopamine. Therefore, the objective of the present study is to determine the optimum dosage of OVASPEC for climbing perch female broodfish. Four dosages of OVASPEC were tested, namely, 0.1 ml kg⁻¹ body weight (BW), 0.3 ml kg⁻¹ BW, 0.5 ml kg⁻¹ BW, and 0.7 ml kg⁻¹ BW of broodfish. The results show that the administration of OVASPEC with different doses had a significant effect (p < 0.05) on the latency period, fertilization, hatching, and survival rates of climbing perch. Fish injected with OVASPEC at a dose range of 0.1–0.7 ml kg⁻¹ BW succeeded in inducing ovulation in climbing perch. The best results were recorded at the dosage of 0.5 ml kg⁻¹ BW.