Name of Innovation: Non-sacrifice breeding and seed production technology of stinging catfish- H. fossilis

Farmer’s /Innovator’s Name: Dr. S. Ghosh, SMS, KVK Narendrapur, West Bangal

Brief Description:

The salient features are-

• Brood fish of 80-120 g are to be stocked at 2-3/m² and to be ed with 33% protein pellet feed at 2% body weight twice a day.
• Females @ 0.3 ml/kg BW and males @ 0.1 ml/kg BW are to be injected with synthetic hormone (spawn-pro/gonadoprim/WOVA-FH) to induce ovulation.
• Maintain water quality through aeration and water replenishment during larval rearing to reduce stress in larvae and to enhance growth and survival.
• Larvae can be reared at 1000-1500/m² for 15-20 days in indoor conditions for better growth and survival. Stocking at higher density leads to sudden mortality and reduced growth.
• Tubifex paste should be provided during the initial phase of larval feeding and then, gradually weaned to live tubifex and finally, compound feed. This husbandry practice stimulates fry to accept feed immediately after release into nursery tanks during fingerling production which ultimately increases growth and survival.
• Segregation of bigger fry and removal of filamentous algae at periodic intervals results in better growth and survival.