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The Quillfish has an extremely elongate, slender body with lon-based tall dorsal and anal fins which make the fish similar in shape to the primary feather of a bird or a quill pen. The small head is only between 4 and 7% of the length of the body and there is a wide fleshy appendage at the front of the lower jaw.
In certain fish processing industries, filleting is done manually. The fish is be-headed, gutted, de-iced and de-scaled. It is then graded and filleted by hand. After the processing phase, the fish fillet is trimmed for blood, bones, fins, black membrane, fleas, loose fish scales and sorted. It is then packed and frozen in cold storage. [2]
The feeds, in the form of granules or pellets, give nutrition in a stable and concentrated form, enabling the fish to feed efficiently and grow to their full potential. Many of the fish farmed more intensively around the world today are carnivorous, such as Atlantic salmon , trout , sea bass, and turbot .
The fish's suckermouth, with its fleshy lips, is located in an inferior position at the bottom of its head, as the fish obtains its food from bottom surfaces. [5] The white sucker is often mistaken for different species of suckers and redhorses , but can be distinguished by the complete lateral line system containing 55–85 small scales. [ 6 ]
Fish cages containing salmon in Loch Ailort, Scotland, an inshore water. Inshore mariculture is farming marine species such as algae, fish, and shellfish in waters affected by the tide, which include both littoral waters and their estuarine environments, such as bays, brackish rivers, and naturally fed and flushing saltwater ponds.
World capture fisheries and aquaculture production by species group [1] This is a list of aquatic animals that are harvested commercially in the greatest amounts, listed in order of tonnage per year (2012) by the Food and Agriculture Organization. Species listed here have an annual tonnage in excess of 160,000 tonnes.
Balyk is the Russian term for the salted and dried soft parts of fish of large valuable species, such as sturgeon or salmon. Over time, the term has come to apply also to smoked fish of these species. Boknafisk is a variant of stockfish and is unsalted fish partially dried by sun and wind on drying flakes or on a wall.
Aquaculture can also be defined as the breeding, growing, and harvesting of fish and other aquatic plants, also known as farming in water. It is an environmental source of food and commercial products that help to improve healthier habitats and are used to reconstruct the population of endangered aquatic species.