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Piranhas are "basically like regular fish with large teeth". [19] A few other species may also occur in large groups, while the remaining are solitary or found in small groups. [3] Although popularly described as highly predatory and primarily feeding on fish, piranha diets vary extensively, [3] leading to their classification as omnivorous. [4]
This characteristic combined with its large size make it a danger to humans. Piranha's attacks on humans are anecdotal for the most part. The piranha mostly prefers to eat small fish and insects, along with seeds and aquatic plant material. The pygocentrus piraya plays a key role in their ecosystem by regulating the population of other fish [5]
Piranhamesodon pinnatomus is a pycnodontiform fish from the Late Jurassic (ca. ). It was described from the Plattenkalk deposits of the Solnhofen Formation , in Bavaria , Germany. It is notable for having sharp, serrated teeth highly reminiscent of a piranha , a highly unusual trait as most other species in the order Pycnodontiformes were ...
While studying piranhas and pacus in an effort to better assess vital fish biodiversity in the 4,000-mile-long (6,400-kilometer-long) river, an international team of researchers has found and ...
Incident has raised concerns over public safety – and the eroding of rail standards, writes Graig Graziosi
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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 ...
The word piranha itself is a Portuguese merging of words originating in the Tupi language and may have several meanings including "tooth fish", [5] "cutting fish", "devil fish" [6] or "biting fish". [7] The species name was chosen to reflect Megapiranha's place of origin near the city of Paraná. [4]