Indigenous ornamental fishes of west Bengal
- A. Basu, D. Dutta, S. Banerjee
- Recent Research in Science and Technology
The effect of different concentrations of synthetic Gynogen (17β – Estradiol)on the adult fish, Trichogasterlaliuswas studied in the present investigation. It was found that fishes fed with homogenous mixture of the hormone in ethyl alcohol exhibited phenotypical, morphometric, gonadal changes and differences in GSI value. Significant differences for length, weight, body color and GSI values were observed between hormones treated and control groups. Hormone treated groups (i.e. 5 mg/Kg, 10 mg/Kg and 15 mg/Kg) were showing less color than the control groups. However, among the treated group; 15 mg/Kg was showing less coloration than 10 mg/Kg and 5 mg/Kg of hormone treated groups at the end of the experiment. The maximum length of 4.22 cm obtained in 5 mg/kg treated fish in 90th day whereas a minimum of 3.43 cm obtained in initial day in controlled fishes. The maximum weight of 1.3839 g was obtained in control fish in 45th day whereas a minimum of 0.915g was obtained in initial in 15 mg/kg treated fish. Control was showing no significant difference with 10 mg/kg and 15 mg/kg treated groups. The maximum GnSI of 0.1851 was obtained in control group in 45 day whereas a minimum of 0.112 was obtained in the Initial day in 15mg/kg treated fish.