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In addition to humans, predators of the gafftopsail catfish include the tiger shark and bull shark. Gafftopsail catfish spawn over inshore mudflats during a relatively short time span (10 days) from May to August; [9]. The eggs are about 1 in (2.5 cm) in diameter. Being mouthbrooders, males keep up to 55 eggs in their mouths until they hatch ...
A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most jawed fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration, as well as possible hydrodynamic advantages.
Fish over about 100 mm also eat small fish while adults include shrimps, crayfish in the warmer months and midge larvae in winter. In addition, they eat mollusks and dragonfly, caddis and mayfly larvae. [7] The eel-tailed catfish is host for a number of intestinal parasites including cestodes and nematodes. [8]
The maximum total length may possibly exceed 3 m (9.8 ft) with a maximum weight of over 200 kg (440 lb). [13] Such lengths are rare and unproven during the last century, but there is a somewhat credible report from the 19th century of a wels catfish of this size.
Brachyplatystoma filamentosum, commonly called piraíba, kumakuma, valentón or lau lau, is a species of catfish of the family Pimelodidae and genus Brachyplatystoma that is native to Amazon and Orinoco River basins and rivers in the Guianas and northeastern Brazil.
One of the largest species is the blue catfish, Ictalurus furcatus, specimens of which have been found to weigh over 50 kg (110 lb). The maximum length is 160 cm (5.2 ft) in the blue catfish and the flathead catfish. [ 5 ]
The recommendations on maximum consumption of oily fish were up to four portions (1 portion = 140g, or approx 4.9 ounces) a week for men, boys, and women past childbearing age, and up to two portions a week for women of childbearing age, including pregnant and breastfeeding women, and girls.
Pterygoplichthys has undergone much shifting in the past decades. Previously Liposarcus, Glyptoperichthys and Pterygoplichthys had been named as separate genera. [2] [3] Since then, these genera were recognized as synonyms of Pterygoplichthys by Armbruster, as the few differences between the genera were not deemed great enough to validate Glyptoperichthys and Liposarcus, and that recognizing ...