Answer: To induce spawning in fish that do not breed in pond conditions.
- A To increase overall disease resistance in farmed fish stocks over time
- B To induce spawning in fish that do not breed in pond conditions
- C To accelerate the feed conversion ratio in broiler fish specifically
- D To stimulate immune response against common fish pathogens generally
Correct answer: B. To induce spawning in fish that do not breed in pond conditions
Explanation: Many fish do not breed naturally in confined pond conditions. Pituitary hormone (gonadotropin) injection is used to induce spawning and seed production in these fish, solving the bottleneck of seed availability.
Different fish species occupy different feeding depths in the same pond without competing for food: Catla feeds near the surface, Rohu in the middle zone, and Mrigal or common carp at the bottom - letting a single pond support far more total fish than one species alone.
Concept context
Learn about animal husbandry, plant breeding, tissue culture, biofortification, and single cell protein.
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