Grass carp require long rivers for the survival of the eggs and very young fish. The zones where the two waters mix are attractive to ostracods and young fish. It provides good habitat for many aquatic invertebrates and cover for young fish and amphibians. The owner also would have closely enforced rules on not catching young fish. Recruitment is defined as the number of young fish that live to adulthood. She is in love with a young fish trader, Pareekutty (Madhu). The fins of adults are grey, while those of young fish are grey. This dense region of roots provides excellent cover for young fish. Stonefish eggs are fairly large, with young fish hatching well developed. Of the millions of young fish born, only a relative few survive to adulthood. Also the upturned mouth is visible even in young fish. The sucking disc begins to show when the young fish are about long. The parents move to deeper water and do not care for the young fish. This photophore is green in young fish and becomes more red as it ages. Anorexia and lethargy are common, as are mortalities, especially in young fish.