Overview

Comprehensive Description

Biology

Feeds mainly during the daytime, though some large fish (15-20 cm SL) extend their foraging activity to dusk (about 1800-1900H). Night is spent sheltered among vegetation. Small-sized to medium-sized fish (7-10 cm) are solitary and patrol feeding territories (3-4 square m.) in a way similar to that reported for the scale-eating Catoprion mento. Stalking with some use of plant cover is a frequent mode of hunting employed by S. marginatus. It approaches its prey with a slow, stealthy movement from behind or below. It strikes its prey on the tail or anal fin, of which a piece is clipped out with a jerking motion of the body. This clipping is audible underwater. Lurking is also employed during daytime (Ref. 9080).
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Distribution

South America: Paraguay-Paraná River basin.
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Paraguay-Paraná River basin: Argentina, Brazil, Paraguay and Uruguay.
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Physical Description

Size

Max. size

27.0 cm SL (male/unsexed; (Ref. 81048))
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Ecology

Habitat

Environment

benthopelagic; freshwater
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Trophic Strategy

Food dominated by fish fins and scales, approximately 60% (Ref. 56181).
  • Sazima, I. and F.A. Machado 1990 Underwater observations of piranhas in western Brazil. Environ. Biol. Fish. 28:17-31. (Ref. 9080)
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Diseases and Parasites

Procamallanus Infection 10. Parasitic infestations (protozoa, worms, etc.)
  • Moravec, F. 1998 Nematodes of freshwater fishes of the neotropical region. 464 p. Praha, Academy of Sciences of the Czech Republic. (Ref. 51153)
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Serrasalmus cf. marginatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Barcode data: Serrasalmus marginatus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Serrasalmus marginatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 8
Specimens with Barcodes: 11
Species With Barcodes: 1
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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