Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology.
Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. This measurement excludes the length of the caudal (tail) fin.[1]
Total and fork length of a fish
Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. 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.[2]
Fishery biologists often use a third measure in fishes with forked tails, called Fork length (FL), the length of a fish measured from the tip of the snout to the end of the middle caudal fin rays, and is used in fishes in which it is difficult to tell where the vertebral column ends.[3]
Fin lengths and eye diameteredit
Other possible measurements include the lengths of various fins, the lengths of fin bases and the diameter of the eye.[4]
^"Standard Measurements of Bony Fish diagram". Florida Museum of Natural History Ichthyology Department. Retrieved 2007-06-06.
External linksedit
Diagram of fish measurements - Florida Museum of Natural History Ichthyology Department
April 09, 2024
fish, measurement, measuring, individual, fish, various, parts, their, anatomies, data, used, many, areas, ichthyology, including, taxonomy, fishery, biology, contents, overall, length, lengths, diameter, also, references, external, linksoverall, length, edits. Fish measurement is the measuring of individual fish and various parts of their anatomies for data used in many areas of ichthyology including taxonomy and fishery biology Contents 1 Overall length 2 Fin lengths and eye diameter 3 See also 4 References 5 External linksOverall length editStandard length SL is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate This measurement excludes the length of the caudal tail fin 1 nbsp Total and fork length of a fishTotal length TL is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin usually measured with the lobes compressed along the midline 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 2 Total length measurements are used in slot limit and minimum landing size regulations Fishery biologists often use a third measure in fishes with forked tails called Fork length FL the length of a fish measured from the tip of the snout to the end of the middle caudal fin rays and is used in fishes in which it is difficult to tell where the vertebral column ends 3 Fin lengths and eye diameter editOther possible measurements include the lengths of various fins the lengths of fin bases and the diameter of the eye 4 nbsp Abyssal grenadier nbsp Black drum nbsp Red snapperSee also editIchthyology terms Standard weight in fishReferences edit Term standard length FishBase org 2004 11 18 Retrieved 2015 08 18 a b Term total length FishBase org 2004 11 18 Retrieved 2015 08 18 Term fork length FishBase org 2004 11 18 Retrieved 2015 08 18 Standard Measurements of Bony Fish diagram Florida Museum of Natural History Ichthyology Department Retrieved 2007 06 06 External links editDiagram of fish measurements Florida Museum of Natural History Ichthyology Department Retrieved from https en wikipedia org w index php title Fish measurement amp oldid 1185489468, wikipedia, wiki, book, books, library,
