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2. Fish measurement - Wikipedia

   en.wikipedia.org/wiki/Fish_measurement

   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 ...

3. Population dynamics of fisheries - Wikipedia

   en.wikipedia.org/wiki/Population_dynamics_of...

   It has been called "the central problem of fish population dynamics" [14] and “the major problem in fisheries science". [15] Fish produce huge volumes of larvae, but the volumes are very variable and mortality is high. This makes good predictions difficult. [16] According to Daniel Pauly, [15] [17] the definitive study was made in 1999 by ...

4. Stock assessment - Wikipedia

   en.wikipedia.org/wiki/Stock_assessment

   A catch curve is a descriptive figure that describes catch by age and length. A catch curve only reflects fish that have recruited to a fishery and does not reflect the full age structure of a stock. A catch curve illustrates the proportions that different age and size classes are harvested by a fishery. [4]

5. Catch per unit effort - Wikipedia

   en.wikipedia.org/wiki/Catch_Per_Unit_Effort

   Although CPUE is a relative measure of abundance, it can be used to estimate absolute abundances. [3] The main difficulty when using measures of CPUE is to define the unit of effort. [4] CPUE is also often nonlinearly related to abundance, making interpretation more difficult. [5]

6. Standard weight in fish - Wikipedia

   en.wikipedia.org/wiki/Standard_weight_in_fish

   Standard weight equation for largemouth bass [1] and burbot [2] (fish). Standard weight in fish is the typical or expected weight at a given total length for a specific species of fish. Most standard weight equations are for freshwater fish species. Weight-length curves are developed by weighing and measuring samples of fish from the population.

7. Fish counter - Wikipedia

   en.wikipedia.org/wiki/Fish_counter

   A resistive counter is associated with an in-river structure, an example constituting a Crump weir. [1] The resistivity of a fish is lower than that of water. So, as fish cross this barrier, they pass embedded electrodes, and the difference in resistivity disturbs the field established in the vicinity of the electrodes, altering inter-electrode resistance.

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9. Outline of fisheries - Wikipedia

   en.wikipedia.org/wiki/Outline_of_fisheries

   Fish mortality – Fish mortality is a term widely used in fisheries science that denotes the loss of fish from a stock through death. Condition index – The condition index in fish is a way to measure the overall health of a fish by comparing its weight with the typical weight of other fish of the same kind and of the same length.