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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. The condition index is its actual weight divided by its expected weight, times 100%. A fish of normal weight has a condition index of 100 percent.
The crevalle jack is one of the largest members of Caranx, growing to a known maximum length of 125 cm and a weight of 32 kg, [6] although it is generally uncommon at lengths greater than 65 cm. [10] Unverified reports of fish over 150 cm may also be attributable to this species. [11]
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.
Another large species is the wels catfish (Silurus glanis) of Europe and Central Asia, which strongly rivals the proceeding species in weight and could possibly surpass them in length. While wels have been confirmed to 3.1 m (10 ft), other whiskered giants have been reliably reported to grow to 3.7 m (12 ft) and 265 kg (584 lb) and less ...
Invariably, b is close to 3.0 for all species, and c is a constant that varies among species. [9] The coefficient c and the exponent b are found by fitting an equation of this form to measured weight-length data. For some fish, including spotted seatrout, the weight-length relationships vary with the seasons and with gender. [6]
An average adult channel catfish measures at least 12 inches (30 centimeters) long, and weighs between 2 and 4 pounds. The largest specimen on record weighed 58 pounds and was caught in 1964 by an angler in South Carolina. [16] As channel catfish grow longer, their weight increases. The relationship between length and weight is not linear.
The common periwinkle or winkle (Littorina littorea) is a species of small edible whelk or sea snail, a marine gastropod mollusc that has gills and an operculum, and is classified within the family Littorinidae, the periwinkles. [2] This is a robust intertidal species with a dark and sometimes banded shell.
Because of this, black marlin distribution is influenced by the surface height of the ocean throughout the time of year. [20] Black Marlin live in temperatures from 15 degrees Celsius to 30 degrees Celsius. [17] Juvenile black marlin around Australia utilize the great barrier reef lagoon as an area to grow and develop due to an abundance of ...