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Populations of large predatory fish in the global oceans were estimated to be about 10% of their pre-industrial levels by 2003, [1] and they are most at risk of extinction; there was a disproportionate level of large predatory fish extinctions during the Cretaceous–Paleogene extinction event 66 million years ago. [2]
Various carnivorans, with feliforms to the left, and caniforms to the right. Carnivora is an order of placental mammals that have specialized in primarily eating flesh. Members of this order are called carnivorans, or colloquially carnivores, though the term more properly refers to any meat-eating organisms, and some carnivoran species are omnivores or herbivores.
The northern pike gets its common name from its resemblance to the pole-weapon known as the pike (from the Middle English for 'pointed'). Various other unofficial trivial names are common pike, Lakes pike, great northern pike, great northern, northern (in the U.S. Upper Midwest and in the Canadian provinces of Alberta, Manitoba and Saskatchewan), jackfish, jack, slough shark, snake, slimer ...
The fish was once believed to live in Brazil, but a study conducted by Luiz A. Rocha in 2004 demonstrated that Brazilian populations belonged to a different species, Halichoeres penrosei. [4] Halichoeres maculipinna lives on the tops of coral reefs and in rocky areas. The fish is generally found 1 to 30 metres (3 to 100 ft) beneath the surface.
It is normally observed in loose schools, but larger fish are more often recorded as pairs or individuals. It is a carnivorous species which preys on prawns and fish. The fish preyed upon are mainly grey mullets, anchovies and drums, and they sometimes feed on polychaetes. The ratio of crustaceans to fish fed on varies with the season.
The family contains about 450 species in 65 genera, including the sea basses and the groupers (subfamily Epinephelinae). Although many species are small, in some cases less than 10 cm (3.9 in), the giant grouper ( Epinephelus lanceolatus ) is one of the largest bony fishes in the world, growing to 2.7 m (8 ft 10 in) in length and 400 kg (880 lb ...
The P. sanitwongsei is a carnivorous fish, whose prey consist of shrimp, crabs, and fish. [6] Since the fish lives on the bottom, it is also known to feed on larger animals' carcasses. [4] Due to it being both an apex predator and a bottom-dwelling fish, it limits the populations of smaller fish as many catfish species.
The name "trout" is commonly used for many (if not most) species in three of the seven genera in the subfamily Salmoninae: Salmo , Oncorhynchus and Salvelinus (circum-arctic). Fish species referred to as trout include: Salmo: marble trout, S. marmoratus. Genus Salmo, all extant species except Atlantic salmon