Teleost is a diverse group of ray-finned fishes which belongs to largest infraclass Teleostei under the class Actinopterygii. The group teleost includes 40 orders and 448 families with over 26000 species. They are the most advanced fish among the bony fishes. The world`s important sport and commercial fishes include this group. The length of the … Read more
There are many types of food ingredients that do not have a scientific explanation for their use. This type of supplemental food or food ingredient is called non-conventional feed resources( NCFR). Such food items are separated from grains and agricultural by-products. NCFR or unconventional food is not commonly used commercially for cattle, poultry and fish. … Read more
Fish take food from the aquatic environment for life sustaining, body building and growth. Different species of fish feel comfortable in different aquatic environments. The foods that fish consume from different aquatic environments are varied. Fish consume a large number of living ingredients and inert substances as food. Fish eating techniques are more diverse and … Read more
The heart is a special pump device with a valve in the circulatory system. In case of fish, the heart is a folded tube that contains three or four enlarged areas. The blood brought through the veins travels from the heart to the gills through the ventral aorta and the heart always contains carbon dioxide … Read more
Different parts of the body, especially the excretory system, are involved in the removal of waste products produced by metabolism. The process of removing nitrogenous wastes from the body is called excretion. The subsidiary system of excretory function is known as excretory system. These excretory substances are formed by the accrual reaction of amino acids. … Read more
Lampreys are eel like scaleless and jawless animals which belongs to the family Petromyzontidae under order Petromyzontiformes of class Cephalaspidomorphi. They are found in coastal and freshwater habitats around the world except Africa. They can grow up to 100 cm in length with well-developed eyes. They have one or two dorsal fins with seven gill … Read more