PARENTAL CARE IN FISHES Caring of young ones by the parent is known as the parental care. Infact, parental care is very important for survival. Parental care has evolved across the animal kingdom to increase the probability of offspring surviving in an environment fraught with danger. Parental care is common among mammals and birds. Generally fishes do not care for their eggs or young ones
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Brood parasitism – *There is one fish analogy to the true brood parasitism found in birds. *In Lake Tanganyika, the catfish Synodontis multipunctatus attends the spawning ritual of various mouthbrooding cichlids and lays eggs at the same time, in the same spot. *The female cichlid, as is her normal habit, picks up all the eggs present and commences incubating them inside her mouth. Unable knowns to her, some of those eggs are of catfish. *These alien eggs hatch earlier than cichlid eggs. *While still in the mouth of the female cichlid, the catfish fry finish absorbing their yolk sac. *Meanwhile the cichlid eggs hatch, but only just in time to be devoured by the baby catfish. * So, all that the poor female cichlid has to show for her parental effort at the end of her reproductive cycle is a few fat young that are not even her own species (Sato, 1986).
6. Formation of integumentary cups –*In females of Platystacus (cat fish), the skin of lower surface becomes spongy and vascular during spawning season. *Immediately after fertilization of eggs, the female pressed her body against the eggs. *This …show more content…
*Ability to grow faster *Ability to feed on natural as well as artificial food. *Should be resistance to diseases. *Should be platable. *Ability to tolerate poor water quality. *Ability to live in pond with other species *Should be gentle and non poisonous * Should be of low cost of
Brood parasitism – *There is one fish analogy to the true brood parasitism found in birds. *In Lake Tanganyika, the catfish Synodontis multipunctatus attends the spawning ritual of various mouthbrooding cichlids and lays eggs at the same time, in the same spot. *The female cichlid, as is her normal habit, picks up all the eggs present and commences incubating them inside her mouth. Unable knowns to her, some of those eggs are of catfish. *These alien eggs hatch earlier than cichlid eggs. *While still in the mouth of the female cichlid, the catfish fry finish absorbing their yolk sac. *Meanwhile the cichlid eggs hatch, but only just in time to be devoured by the baby catfish. * So, all that the poor female cichlid has to show for her parental effort at the end of her reproductive cycle is a few fat young that are not even her own species (Sato, 1986).
6. Formation of integumentary cups –*In females of Platystacus (cat fish), the skin of lower surface becomes spongy and vascular during spawning season. *Immediately after fertilization of eggs, the female pressed her body against the eggs. *This …show more content…
*Ability to grow faster *Ability to feed on natural as well as artificial food. *Should be resistance to diseases. *Should be platable. *Ability to tolerate poor water quality. *Ability to live in pond with other species *Should be gentle and non poisonous * Should be of low cost of