Samiya Haque Rifa, Author at EazyBio

Fecundity and Egg Size of Fishes

It is not at all clear why some species have evolved a strategy of producing many small eggs, and others […]

Vertebrates of both sexes possess a germinal epithelium consisting of germ and somatic cells. The gonads are mesodermal in origin

According to Karel Liem (1980) most of the enormous variety and range of foods eaten by fishes is obtained through

Like other animals, fish possess an array of digestive enymes by which large macromolecular nutrients are broken down into smaller

The vast majority of living fishes are predatory. Of some 1100 species of extant elasmobranchs, only 13 (1.2%) – the

The digestive tract of fishes is divided into four regions: the foregut (esophagus and stomach, if present), mid-gut, hindgut, and

Living Agnathan fishes possess conical, rasping tooth-like structures made of keratin, the same structural protein found in human hair and

Blood ionic composition in marine elasmobranchs and holocephalans is some what higher than in teleosts, but its osmolarity is very

But optimal foraging strategies may not remain identical throughout an organism’s lifespan and many species exhibit a trophic ontogeny or

Apart from a brief foray into the Agnathan kidney, we have so far considered almost entirely extrarenal routes of ion