Question

how the Rohu fish is perfectly adapted to its environment​

Answer 1

Answer:

Adaptations for Water

Fish have gills that allow them to “breathe” oxygen in water. ... They are typically long and narrow, which reduces water resistance when they swim. Most fish have several fins for swimming. They use some of their fins to propel themselves through the water and others to steer the body as they swim.

Explanation:

Rohu fish grows well at water temperatures between 25°C to 36°C. Seed Stocking and Fertilizers in Rohu Fish Farming:- Organic, inorganic fertilizers, and supplementary feeding should be provided in the pond along with the mixture of oil cake, rice bran, wheat flakes.

Answer 2

Fish, like us and all other animals, need a constant supply of oxygen to survive. Our atmosphere is about 20 percent oxygen, so we simply take it in through our lungs. Lungs are useless underwater, however, as anyone who has nearly drowned can readily and breathlessly attest -- even dolphins and whales need to take in oxygen from the atmosphere to survive. Gills enable fish to absorb oxygen from the water. Fish do not chemically break down water, H2O, to derive oxygen. They absorb O2 that is dissolved in the water. There are only about 4 to 8 parts per million of oxygen in water, compared to the 20 percent in the atmosphere we lung-breathing creatures enjoy.