Search results
Results from the WOW.Com Content Network
The tambaqui (Colossoma macropomum) is a large species of freshwater fish in the family Serrasalmidae. It is native to tropical South America, but kept in aquaculture and introduced elsewhere. [ 2 ]
Piaractus is a genus of large serrasalmid from South America. [1] The two traditionally recognized species of Piaractus are very similar in appearance and were formerly included in the genus Colossoma, which currently only contains another similar species, the tambaqui (Colossoma macropomum).
The Red-Bellied Pacu supports major fisheries and based on a review by IBAMA, it was the 12th most caught fish by weight in the Brazilian Amazon in 1998 (just after the tambaqui). [7] The Red-Bellied Pacu is often kept in aquaculture. Hybrids between this species and the tambaqui have been produced in aquaculture. [14]
Pacu (Portuguese pronunciation:) is a common name used to refer to several species of omnivorous South American freshwater serrasalmid fish related to piranhas.Pacu and piranha do not have similar teeth, the main difference being jaw alignment; piranha have pointed, razor-sharp teeth in a pronounced underbite, whereas pacu have squarer, straighter teeth and a less severe underbite, or a slight ...
Several of the most important species in Amazonian fisheries rely on whitewater for breeding: The tambaqui (Colossoma macropomum), black prochilodus (Prochilodus nigricans) and Semaprochilodus spp. move into whitewater rivers to spawn, and many large catfish species (especially pimelodids such as Brachyplatystoma) perform long migrations up ...
The largest species in this small order (both by number of species and body size) is the sand roller (Percopsis transmontana) of North America. This species can range up to 20 cm (7.9 in) in length and can weigh over 11 g (0.39 oz). [73] Flatfish (Pleuronectiformes) The Pacific halibut, largest of the flatfish, displays its effective camouflage.
In other serrasalmids the teeth are arranged either two rows of seven teeth with a morphologically distinct second tooth of the inner row (third tooth), such an arrangement is seen in the Tambaqui for instance, a zig-zag pattern of five teeth (like in Catoprion) or a single row of six teeth, which is typical for the carnivorous species. [4]
In the tambaqui, a South American species, exposure to hypoxia induces within hours the development of additional blood vessels inside the lower lip, enhancing its ability to take up oxygen during ASR. [47] Swimming upside down may also help fishes perform ASR, as in some upside-down catfish. [48]