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Spawning triggers allow many fish to synchronize their breeding, making it more probable that individual fish will find a mate. In most cases, if these triggers were not present, male and female fish would not meet at the right stage and the number of offspring would be reduced.
Growth chart. The largest recorded weight for a gafftopsail catfish is 4.54 kg (10.0 lb) [7] and 69 cm (27 in) in length. [8] A more common weight and length of gafftopsails caught is 1–2 lb (450–910 g) and 12–16 in (30–41 cm). As gafftopsail catfish grow longer, they increase in weight, but the relationship is not linear.
The blue catfish (Ictalurus furcatus) is a large species of North American catfish, reaching a length of 65 in (170 cm) and a weight of 143 lb (65 kg). [4] The continent's largest catfish, it can live to 20 years, with a typical fish being between 25–46 in (64–117 cm) and 30–70 lb (14–32 kg).
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Some particular types of migration are anadromous, in which adult fish live in the sea and migrate into fresh water to spawn; and catadromous, in which adult fish live in fresh water and migrate into salt water to spawn. [2] Marine forage fish often make large migrations between their spawning, feeding and nursery grounds. Their movements are ...
Cat species vary greatly in body and skull sizes, and weights: The largest cat species is the tiger (Panthera tigris), with a head-to-body length of up to 390 cm (150 in), a weight range of at least 65 to 325 kg (143 to 717 lb), and a skull length ranging from 316 to 413 mm (12.4 to 16.3 in).
The skin is scaleless, but covered with mucus, which protects the fish when it is out of water. Air-breathing organ of walking catfish This fish needs to be handled carefully when fishing it due to its embedded sting or thornlike defensive mechanism hidden behind its fins (including the middle ones before the tail fin, similar to the majority ...
The eggs usually hatch in 8–10 days, but can take up to 21 days depending on temperature and proper spawning habitat. Yellow perch do not travel far during the year, but move into deeper water during winter and return to shallow water in spring to spawn. Spawning occurs in the spring when water temperatures are between 6.7 and 12.8 °C.