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It grows to 41 cm (16 in) total length; [4] [6] it is a relatively large species for its genus. [4] It is found in marine, freshwater, and brackish water at depths down to 50 m (160 ft). It is an example of an anadromous fish species, with some populations moving to freshwater to spawn.
Many species of salmon are anadromous and can migrate long distances up rivers to spawn Allowing fish and other migratory animals to travel the rivers can help maintain healthy fish populations. Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ...
The sauger (Sander canadensis) is a freshwater perciform fish of the family Percidae that resembles its close relative, the walleye. The species is a member of the largest vertebrate order, the Perciformes. [3] It is the most migratory percid species in North America. [4]
Fishes are a paraphyletic group and for this reason, the class Pisces seen in older reference works is no longer used in formal taxonomy.Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified within those groups, sometimes as their own classes: [1]
It has relatively sharp lower lip. Generally, the fish range from 25 to 40 centimetres (9.8 to 15.7 in) in length, and weigh about 1 kg (2.2 lb). However, specimens have been recorded up to 58.5 cm (23.0 in) long and 3.4 kg (7.5 lb) in weight. [4] The maximum recorded life span of the fish is 15 years. [5]
The classification of the Indo-Pacific blue marlin (M. mazara) and the Atlantic blue marlin (M. nigricans) as separate species is under debate. [1] Genetic data suggest, although the two groups are isolated from each other, that they are both the same species, with the only genetic exchange occurring when Indo-Pacific blue marlin migrate to and ...
The common logperch is currently not a threatened or endangered fish species. Consequently, no apparent steps are being taken to manage the species. While logperches are not currently a threatened species, several human-created changes are negatively influencing the common logperch. One of these human-induced changes is the construction of dams.
It is a migratory offshore fish and undergoes a daily vertical migration from the surface to the seabed at depths down to about 1,000 m (3,300 ft). It is the object of an important commercial fishery off the West Coast of the United States, and annual quotas are used to prevent overfishing.