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It is a straight-line measure, not measured over the curve of the body. [ 2 ] Standard length measurements are used with Teleostei (most bony fish ), while total length measurements are used with Myxini ( hagfish ), Petromyzontiformes ( lampreys ) and usually Elasmobranchii ( sharks and rays ), as well as some other fishes.
Standard weight equations, together with some measure of a fish's condition, can be used in aquaculture to measure the effectiveness of various feeding, temperature control, containment or other practices. The actual measure of a fish's condition using standard weight is done different ways.
Macrobrachium rosenbergii, also known as the giant river prawn or giant freshwater prawn, is a commercially important species of palaemonid freshwater prawn. It is found throughout the tropical and subtropical areas of the Indo-Pacific region, from India to Southeast Asia and Northern Australia . [ 3 ]
From the mysis stage they are also fed with artemia nauplii and egg-prawn-custard mix. Post larval rearing can be continued in the same tank and post-larvae (PL) are fed with minced mussel meat, mantis shrimp powder or variety of other fresh feeds of particle size 200–1000 μm till they reach PL-20 (day 20 of post-larva).
The common shrimp is a small burrowing species aligned with the notion of a shrimp as being something small, whereas the common prawn is much larger. The terms true shrimp or true prawn are sometimes used to mean what a particular person thinks is a shrimp or prawn. [2] This varies with the person using the terms.
Xiphopenaeus kroyeri, commonly called the Atlantic seabob, is a commercially important prawn. It is up to 140 mm (5.5 in) long and is the most intensely fished prawn species in the Guianas and along much of the Gulf Coast of the United States .
Dendrobranchiata is a suborder of decapods, commonly known as prawns.There are 540 extant species in seven families, and a fossil record extending back to the Devonian.They differ from related animals, such as Caridea and Stenopodidea, by the branching form of the gills and by the fact that they do not brood their eggs, but release them directly into the water.
Macrobrachium amazonicum, also known as the Amazon river prawn, is an economically important species of palaemonid freshwater prawn. It is found throughout the tropical and subtropical areas of South America .