Question

Which pair is essential for the growth of fish?
A. Nitrates and sulfates
B. Sulfates and carbonates
C. Phosphates and carbonates
D. Calcium and phosphorus.

Answer 1

Hint:- Fishes are exclusively aquatic animals that bear gills for respiration and use fins for locomotion. It belongs to the Phylum Chordata, subphylum Vertebrata. Mostly fishes are exothermic animals that depend on environmental factors to maintain their body temperature. There are two types of fish growth, named determinate growth and indeterminate growth. Determinate growth is noticed in the fishes which have a short life and indeterminate growth is found in long-lived fishes.

Complete answer:
Fish need a high amount of calcium and phosphorus to grow properly. Calcium and phosphorus are considered a key component of the fish body. Calcium and phosphorus are responsible for the formation of the body structure, teeth, and scales. Fishes can’t grow properly if an insufficient amount of phosphorus and calcium is present in the water. Approximately 99 percent of calcium and 80 percent of phosphorus is stored within the teeth, bones, and scales of the fish.

Additional information:
Fish farming is an agricultural process that involves the cultivation and growth of fishes for commercial uses. Fish farming is also known as pisciculture. The process includes an enclosed water body where fishes of different varieties are kept and grown properly by supplying essential nutrients and other factors.

Note:- Phosphorus and calcium are the two nutrients that are essential for fish growth. The water which contains a high amount of minerals is known as hard water. Hard water is the main source of calcium for the fishes. The live plants which are found in the water are the source of phosphorus.