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The red-bellied piranha belongs to the family Serrasalmidae, which is a group of medium to large-sized characids and includes other closely related omnivores such as pacus. [5] They are characterized by deep, lateral compressed bodies and long dorsal fins. [ 6 ]
Pygocentrus cariba (Humboldt, 1821) (black spot piranha) – Orinoco river basin. Pygocentrus nattereri Kner, 1858 (red piranha, red-bellied piranha) – Amazon, Paraguay-Paraná-Uruguay, and Essequibo river basins, as well as various river in northeastern Brazil. Pygocentrus palometa Valenciennes, 1850 – Orinoco river basin, possibly a nomen ...
In a review where 38–39 piranha species were recognized, 25 were from the Amazon and 16 from Orinoco, while only three were present in Paraguay–Paraná and two in São Francisco. [9] Most species are restricted to a single river system, but some (such as the red-bellied piranha) occur in several.
Its size and weight are still yet to be determined but it is safe to say that it reaches around the same size and weight as the black piranha. It is a solitary species of piranha contrary to the social lifestyle of the much popular red-bellied piranha. As with all other piranhas, it is one of the hardest biting creatures on the planet relative ...
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 ...
Skull from side and above. Piaractus brachypomus can reach up to 88 cm (2.9 ft) in length and 25 kg (55 lb) in weight. [2]Juveniles have a distinct red chest and stomach, and are easily confused with the carnivorous red-bellied piranha (Pygocentrus nattereri), but the two can be separated by their teeth, which are molar-like in Piaractus brachypomus. [1]