Pygopristis denticulata

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Pygopristis denticulata
Pygopristis denticulata.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Serrasalmidae
Genus: Pygopristis
J. P. Müller & Troschel, 1844
Species: P. denticulata
Binomial name
Pygopristis denticulata
(G. Cuvier, 1819)
Synonyms
  • Serrasalmus denticulatus
    G. Cuvier, 1819
  • Serrasalmus punctatus
    Jardine, 1841
  • Pygopristis fumarius
    J. P. Müller & Troschel, 1845

Pygopristis denticulata is a species of serrasalmidae. It is a rare South American fish found in the Orinoco River basin, north and eastern Guiana Shield rivers, and tributaries of the lower Amazon River.[1] Specimens of this species is frequently found in acid clear or black waters. They usually feed on aquatic insects, small fish, and fruits.[2]

P. denticulata has pentacuspid teeth and a middle cusp that is usually only slightly larger than the other cusps. This is unlike the piranhas, which have tricuspid teeth with a larger middle cusp, making the teeth appear triangular.[3]

P. denticulata grows to about 20.0 cm (7.9 in) in TL.[1] It has 62 chromosomes.[3] This fish possesses powerful dentition that can cause serious bites. It has scales.[1]

References[edit]

  1. ^ a b c Froese, Rainer and Pauly, Daniel, eds. (2007). "Pygopristis denticulata" in FishBase. July 2007 version.
  2. ^ Machado-Allison, A. and W. Fink (1996). Los Peces Caribes de Venezuela. Diagnosis, claves, aspectos ecológicos y evolutivos. Universidad Central de Venezuela, CDCV. (Colección Monografías), Caracas, ISBN 980-00-0967-1, 149p.
  3. ^ a b Freeman, Barbie; Nico, Leo G.; Osentoski, Matthew; Jelks, Howard L.; Collins, Timothy M. (2007). "Molecular systematics of Serrasalmidae: Deciphering the identities of piranha species and unraveling their evolutionary histories" (PDF). Zootaxa 1484: 1–38. doi:10.1046/j.1439-0469.2000.384132.x.