Zoology Library
Primary productivity of ponds: The primary productivity of ponds is in the form of planktons (Phytoplanktons and Zooplanktons). The Plankton are microscopic in nature which are suspended in water, artificial impoundments like ponds, tanks, reservoirs, irrigation channels. Primary producers are of different types like- microplankton, nanoplankton, macroplankton, bloom, phytoplanktons, zooplanktons etc. basically primary productivity is the…
Brackish Water Fisheries: India is blessed with a vast inland water resources in the form of Freshwater resources (Rivers, man made lakes, ponds, streams etc) and Brackish water resources (estuaries, mangrove wetlands, brackish water impoundments). Brackish water is the newly created water bodies when the rivers meet to sea. Both water bodies are mixes where a…
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Fish Marketing Trends in India: The Indian fish market is one of the largest in the world, with a production of over 19 million tonnes in 2022. The market is expected to grow at a CAGR of 8.81% over the next five years, driven by factors such as increasing urbanization, rising disposable incomes, and growing…
Indigenous small fish species: Small fishes are found in ponds, tanks, lakes, floodplains, lowland areas, streams, wetlands, paddy fields and rivers and tributaries. They maximum grow up to a size of 25-30 cm in their life cycle. In India, there are a total 930 native inland water fish species, about 450 are Small Indigenous small…
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Freshwater featherbacks fish Identification Characteristic and Importance: Featherback fishes are the widely distributed in deep and clean waters in the freshwater resources like- rivers, beels, reservoirs, ponds and it enters in brackish water resources. They are carnivorous and predatory fish and feed on aquatic insects, mollusks, shrimps, small fishes, insects and tender roots of aquatic plants…
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Morphometric and Meristic Measurements and Counts Used for the Fishes: In making an account of fish identification, certain terms and abbreviation are used to describe the various parts and measurements of the body of the fish and meristic characters are those characteristics, which can be counted such as scales, fins and fin rays etc. The following…
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Morphological Variation in Fishes: Teleost fish show great variation of body form, fins, scales and other characteristics of the body. This variation is of great taxonomic value, particularly at the lower taxonomic units. Morphological Variation in Fishes I) Body form: i) Asymmetrical body: Some fish that take flat are exceptional in having a bilaterally asymmetrical body….