Potamotrygon motoro, South American freshwater stingray : fisheries, gamefish, aquarium

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Related species
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  Potamotrygon
- Species in
  Potamotrygonidae
- - Classification -
- Potamotrygoninae
- Potamotrygonidae
- Myliobatiformes
- Elasmobranchii
- Chordata
- Animalia

Potamotrygon motoro (Müller & Henle, 1841)

South American freshwater stingray

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Potamotrygon motoro
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Potamotrygonidae (River stingrays) > Potamotrygoninae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
More on authors: Müller & Henle.

Issue
Authorship of species is credited to Müller & Henle (1841) and not Naterrer (who collected the type specimen) as in Rosa (1985a). A widespread species that may require further subdivision after more study. Studies of its reproductive biology indicate that females attain sexual maturity between 24 and 32 cm DW (males between 20 and 30 cm DW), and may produce from three to 21 embryos per gestation (Achenbach & Achencbach, 1976) or only six or seven (Thorson et al., 1983b; these differences may be populational). Larger specimens may weigh 10 kg. This species has been captively bred in aquaria, but is still the most comercially imported species by the aquarium industry. Additional references: Bertin (1939), Castex & Castello (1970b), Achenbach & Achenbach (1976), Thorson et al. (1983b), Sérét & McEachran (1986), Ortega & Vari (1986), Paepke & Schmidt (1988), Barriga (1991), Compagno & Cook (1995), Lasso et al. (1997a), Ferreira et al. (1998), Britski et al. (1999).

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic; pH range: 5.0 - 6.0; dH range: 10 - ?; potamodromous (Ref. 51243). Tropical; 24°C - 26°C (Ref. 2060)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: Uruguay, Paraná-Paraguay, Orinoco, and Amazon River basins.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 50.0 cm WD male/unsexed; (Ref. 36687); max. published weight: 34.2 kg (Ref. 85107)

Found in freshwater rivers. It is an extremely dangerous species. Maximum length reported in Axelrod et al., 1991 (Ref. 6398) is 100 cm TL.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

16 pups were born by one female in captivity (Ref. 57489).

Main reference Upload your references | References | Coordinator : Carvalho, Marcelo | Collaborators

Ortega, H. and R.P. Vari, 1986. Annotated checklist of the freshwater fishes of Peru. Smithson. Contrib. Zool. (437):1-25. (Ref. 6329)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Data deficient (DD) ; Date assessed: 01 October 2005

CITES

Appendix III: International trade cooperation

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Traumatogenic (Ref. 4716)

Human uses

Fisheries: minor commercial; gamefish: yes; aquarium: public aquariums

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet composition
Food consumption
Food rations
Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance

Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics

Distribution
Countries
FAO areas
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Introductions
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Anatomy
Gill area
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetics
Heterozygosity
Heritability

Human related
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Stamps, coins, misc.

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Taxonomy
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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Generation time: 6.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Fec=16).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (54 of 100).

Price category (Ref. 80766): Medium.

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