Paratrygon aiereba

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Paratrygon aiereba
Paratrygon aiereba from above and below. Notice its concave snout, visible lower left on upper photo and to the right on lower photo

Data Deficient  (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Batoidea
Order: Myliobatiformes
Family: Potamotrygonidae
Genus: Paratrygon
Species:
P. aiereba
Binomial name
Paratrygon aiereba
(Müller & Henle, 1841)

Paratrygon aiereba (also known as discus ray, manzana ray or ceja ray) is a

cartilaginous fish in the family Potamotrygonidae from the Amazon basin in South America.[2]

Appearance

This freshwater ray has small eyes and a disc shaped roughly like a

vermiculated or reticulated pattern.[3] It reaches up to 1.6 m (5.2 ft) in disc width and 110 kg (240 lb) in weight, making it one of the largest species in the family.[3] There are unconfirmed claims of much larger individuals, but these are considered highly questionable.[4] Most individuals do not surpass a disc width of 1.3 m (4.3 ft).[3]
Males reach maturity at a disc width of about 60 cm (2.0 ft) and females at about 72 cm (2.4 ft).

Behavior

It mainly feeds on fish,

top predator in its habitat.[6] Adults are found in relatively deep waters in main river channels, but move to shallower waters to feed at night. After a nine-month gestation, the female give birth to an average of two young with a disc width of about 16 cm (6.3 in). Juveniles are found in relatively shallow waters at sandy beaches and in creeks.[3]

References

  1. doi:10.2305/IUCN.UK.2009-2.RLTS.T161588A124329685.en
    . Retrieved 12 November 2021.
  2. S2CID 236301627
    .
  3. ^
    ISBN 9780643109148
    .
  4. ^ "Paratrygon aiereba". fishing-worldrecords.com. Retrieved 25 October 2017.
  5. ISBN 978-0-86727-166-9. {{cite book}}: |work= ignored (help
    )
  6. ISBN 978-1-4200-8047-6. {{cite book}}: |work= ignored (help
    )
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