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Category Archives for "Fisheries Biology"

Lipid Requirements of Fish

Lipids are high-energy nutrients that are used in fish farming as a partial alternative to protein. It provides almost twice as much energy as protein and carbohydrates. It is an important component of the diet because it is rich in fat-soluble vitamins and essential fatty acids. Lipids work with proteins as important components of the […]

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Mineral Requirements of Fish

Minerals are a type of basic elements. Mineral elements are the inorganic elements that are required for the management and maintenance of important physiological processes in the organism. Some important minerals are  Calcium, Phosphorus, Sodium, Sulfur etc. Minerals act as biological catalysts for enzymes, hormones and protein in the body.About 23 types of inorganic minerals […]

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Nutrient Requirements in Fish

Aquatic farming, especially fish farming, has increased dramatically in the last few decades. The aquaculture industry is the fastest growing food production industry in the world. From this sector people get about 50% of the fish production. Significant progress has been made in fish nutrition in recent years. A balanced commercial diet has been developed […]

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Biotic Communities of Lakes and Ponds

Based on the need for subsurface habitat or living independently, different organisms in the stagnant water environment are classified. Organisms that need the bottom of a reservoir to live are called pedonic organisms, while organisms that can live independently are called limnetic organisms. Moreover, aquatic organisms are classified based on size and habitat.NeustonSuch organisms live […]

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Pond: Types, Characteristics and Ecological Zonation

Pond is a small body of stagnant water which is smaller than a lake. Ponds can be either nature-created or man-made. The marsh, aquatic plants and various aquatic animals live mainly in the pond water. Various animals depends on the water level of the pond, food level, presence of plants, presence of harmful animals, confirmation […]

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Distribution of Plankton: Types, Factors and Examples

Plankton (sing. Plankter) is a diverse group of organisms that live in water and cannot swim against the water current. They are used as an important food source for a variety of aquatic organisms such as fish and whales. They are floating organism such as various animals, protists, archaea, algae or bacteria etc. and they […]

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Eutrophication: Definition, Causes, Impacts and Control Strategies

The word ‘eutrophication’ actually comes from a Greek word meaning excessive feeding. When this process starts in a reservoir, it faces terrible consequences. Excessive feeding means that the basic substances that fall into the reservoir cannot be controlled and if this condition continues, the reservoir eventually becomes eutrophic and becomes a dead ecosystem. According to […]

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Lake Morphology and Morophomety

The origin of a lake reflects some basic morphological and morphometric conditions. These conditions change over time due to numerous factors, especially human activities and other events in the catchment area. Such interactions with lakes and reservoirs are very important because of the relationship between the area of the lake or basin, the size of […]

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