Serrasalmus neveriensis

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Serrasalmus neveriensis
Serrasalmus neveriensis (Piraña del río Nivery) .jpg

Serrasalmus neveriensis

Systematics
Otophysa
Order : Tetras (Characiformes)
Family : Sägesalmler (Serrasalmidae)
without rank: Piranhas
Genre : Serrasalmus
Type : Serrasalmus neveriensis
Scientific name
Serrasalmus neveriensis
Machado-Allison, Fink , López Rojas & Rodenas, 1993

Serrasalmus neveriensis is a species of saw tetra from tropical South America . The additional species neveriensis refers to the Venezuelan coastal river Río Neveri , in which this species occurs.

description

Serrasalmus neveriensis reaches a maximum body length of 18 cm SL . The body is high back, the head robust with a slightly pointed snout. The profile in front of the dorsal fin (predorsal) is S-shaped in young animals and slightly S-shaped in adults . The back is dark, the abdomen is yellow or orange in adult animals and silver in young animals. There are large spots on the body that get smaller towards the abdomen. There is a large shoulder patch behind the gill openings. The iris is yellow.

The colorless dorsal fin (dorsal) is supported by two undivided and 14 divided rays . The anal fin (anal) is mostly dark yellow in the front area, the rest is yellowish or orange with a black free or terminal edge. The rear third of the caudal fin is black. The pectoral fins (pectorals) are slightly reddish in adults and colorless and transparent (hyaline) in juvenile animals. The pelvic fins (ventral) are colorless and transparent.

The scales of Serrasalmus neveriensis are numerous and small, the number along the sideline is usually 73 (70 to 75). Before the start of the ventral (pelvic fins) there are usually 24 (20 to 26) abdominal teeth ( serrae ), after the ventral 9 (8 to 10). A preanal sting ray is present. The gill spines are short and broad at the base. The ectopterygoid has 4 to 7 strong teeth.

distribution

Serrasalmus neveriensis occurs in South America in Venezuela . There Serrasalmus neveriensis is only known from two small coastal river areas, the Rio Tui and the Rio Neveri ( Cuenca del Caribe area ). This makes Serrasalmus nethiensis the only species of the genus that occurs naturally in a Caribbean catchment area . The type locality is the Rio Querecual , a tributary of the Rio Neveri in the Venezuelan state of Anzoátegui .

Individual evidence

  1. ^ A b c d e Antonio Machado-Allison, William L. Fink: Los peces caribes de Venezuela: diagnosis, claves, aspectos ecológicos y evolutivos . Universidad Central de Venezuela, 1996, ISBN 9789800009673 , p. 64.
  2. ↑ a b c Roberto E. Reis et al. : Check List of the Freshwater Fishes of South and Central America. 2003, ISBN 8574303615 , p. 191.
  3. ↑ Peter van der Sleen, James S. Albert: Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. 2017, University Press Group Ltd, ISBN 978-0691170749 , p. 193.

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