- A Rohu - surface; Catla - middle
- B Catla - surface; Rohu - middle; Mrigal - bottom
- C Mrigal - surface; Catla - bottom; Rohu - middle
- D Silver carp - bottom; Grass carp - surface
Correct answer: B. Catla - surface; Rohu - middle; Mrigal - bottom
Explanation: In composite fish culture: Catla feeds at the surface, Rohu in the middle column, and Mrigal at the bottom, avoiding competition.
Concept context
Learn about animal husbandry, plant breeding, tissue culture, biofortification, and single cell protein.
Read the full Strategies for Enhancement in Food Production notes →