Fish is a primitive jawed vertebrate animal (Phylum: Chordata). They are cool-blooded aquatic animals that breathe and move with the help of fins. Fish originated in the Ordovician period and spread in the Devonian period. That is why Devonian is called the golden age of fish. The study of fish is called Ichthyology. Fish are … Read more
Scoliodon is an Indo-Pacific species which belongs to the family Ceacharrhinidae under order Carcharhiniformes of Class Elasmmobranchii(=Chondrichthyes). It has an elongated and spindle-shaped body which tappers at the end. The head is dorso-ventrally compressed with laterally compressed trunk and tail. The mouth is situated on the ventral side and the entire body is covered by … Read more
Every living thing consumes food for maintaining its life or for conducting physiological functions like body growth, movement and reproduction. An organism collects the necessary food from its surroundings. This food is used directly or is used by the body in the form of simple products. Digestion is the process by which the body turns … Read more
Food is the essential components of life for every living thing in the living world. Every living thing, regardless of plant or animal, takes food from its own environment. So the nutrition of any animal depends on the intake of food and water. Animals consume food for three main purposes, namely: (1) Food provides energy … Read more
Rohu fish (Labeo rohita) breathe with the help of gills. The branchial chambers on either side of the pharynx contain a total of four pairs of gills. The branchial chambers with gills are covered with operculum. The posterior end of the operculum has a branchiostegal membrane. As the membrane rises and falls, the operculum can … Read more
As a result of evolution, fish has gained structural adaptation to take food in different conditions due to the diversity of fish diet. Fish take food from the natural environment. Different types of fish eat different types of food so their food list is much larger. The way and method of taking food depends on … Read more