Category Archives for "Fisheries Biology"

Catla catla and Its Life History

Freshwater fish live in freshwater habitats such as rivers, lakes, streams, ponds, ditches, marshes, flood plain, etc. About 41.24% of all known fish species occur in freshwater. The most notable freshwater fish species are Rohu, Catla, Mrigal, etc. In this article, we will discuss about the Catla calta and its life history.Systematic PositionPhylum: ChordataSub phylum: […]

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Mrigal Carp (Cirrhinus cirrhosus) and Its Life History

Fish is one of the major sources of animal origin protein. Fisheries have a unique role in providing employment, foreign exchange earnings, and nutrition. About 65 to 70 percent of the protein we consume every day comes from fish. There are various species of fish belonging to the family Cyprinidae under the order Cypriniformes. These fish are […]

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Food and Feeding Habits of Fish

The inland water bodies consist of small aquariums to nursery ponds, canals, beels, haor, baors(oxbow-lake), rivers, streams, flooded lands, etc. These are called freshwater basins.  The more diverse fish types are found in these water bodies.The shape, nature, feeding habits, color, etc. vary from species to species.  Their cultivation system is also different. It is […]

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Fish Food and Types: Natural and Supplementary Food

Fishes are cold-blooded vertebrate aquatic animals. They prefer to feed various types of food due to their different food and feeding habits. Among them, some feed on plant-based food and some like to eat animal-based foods while many fish species take both plants and animals based food and they are known as omnivorous. In this […]

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Chondrichthyes Vs Osteichthyes:General Characteristics and Differences

There are approximately 34,000 known fish species throughout the world which live in either fresh or saltwater environments. They are cold-blooded animals but only the opah (Lampris guttatus) is warm-blooded fish which is also known as cravo, kingfish, moonfish, and Jerusalem haddock.  There are two main groups of fish, namely Chondrichthyes and Osteichthyes based on […]

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Fish: Size Variations, Appearance and Its Body Parts

Fish are cold-blooded aquatic vertebrate animals with torpedo shaped body. They have a wide variety of shapes, colors, and sizes. There are approximately 34,000 species of fish in the fresh and salt waters of the world.Size VariationsThere are numerous living fish species in the world. Among them, many fish are under a few cms in […]

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Fish Fins: Types, Modification and Functions

Fins are one of the most distinguishing features of a fish and they have several different forms. Two types of fins are found in most of the fish: median and paired fins. Median fins are single in number which runs down the mid-line of the body. In fishes, median fins are dorsal, caudal and anal […]

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