Rays Codexery

Colares stingray

Last updated

The IUCN has assessed this species as critically endangered.[1] In 2004, the scientific journal Zootaxa published the first description of the Colares stingray, authored by Hugo Santos, Ulisses Gomes, and Patricia Charvet-Almeida.[2] The name of this species derives from Colares Island, located in Marajó Bay, which is the capture site of the type specimen.[2]

Scientific classification

  1. KingdomAnimalia
  2. PhylumChordata
  3. ClassChondrichthyes
  4. SubclassElasmobranchii
  5. OrderMyliobatiformes
  6. FamilyDasyatidae
  7. GenusFontitrygon
  8. SpeciesFontitrygon colarensis

Named by (H. R. S. Santos, U. L. Gomes & Charvet-Almeida, 2004)

Close relatives

Other species of Fontitrygon with a Codexery entry.

Sources: Wikipedia taxobox: Colares stingray (CC BY-SA 4.0) · order, family and genus agree with WoRMS AphiaID 1042836 (CC BY 4.0)

Conservation status

Critically Endangered (CR)

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR▲ this species
  6. EW
  7. EX
Population trend
Not held in our sources — see the assessment
Assessment published
2020

Source: IUCN Red List assessment · GBIF copy of the Red List category

How big is it?

Size comparison: Colares stingray and a personA 2.61 m long colares stingray drawn to scale next to a 1.8 m tall person. Schematic shapes, not a likeness.2.61 m1.8 m

Largest length in the source, 2.61 m, next to a 1.8 m person.

Diagram: drawn by Codexery, schematic shapes to scale (not a likeness). Length: Wikipedia: Colares stingray

Biology and range

The range of the Colares stingray appears restricted to the mouth of the Amazon River in northern Brazil.[3] It is found in estuarine areas affected by freshwater discharge, to a depth of 6 m.[3] This species conducts annual movements influenced by salinity, shifting offshore during the rainy season.[3] Like other stingrays, the Colares stingray is aplacental viviparous.[4]

The pectoral fin disk of the Colares stingray is diamond-shaped, with its length and width roughly equal, and it features a long snout that comes to a point.[5] The whip-like tail exceeds the disk length by more than a factor of two.[5] On the upper surface of the tail sits a stinging spine that bears between 69 and 70 serrations.[5] Maximum recorded dimensions for males are 2.07 m in total length and 63 cm in disk width; for females, these figures are 2.61 m total length and 91 cm disk width.[5]

Litters contain between one and four offspring, and the entire reproductive cycle is thought to span approximately one year.[4]

What the specialist sources record

The World Register of Marine Species lists the accepted name as Fontitrygon colarensis, in the family Dasyatidae.[6] GBIF holds 9 occurrence records for this taxon as of 7 October 2026.[7] The GBIF Backbone Taxonomy also accepts the name Fontitrygon colarensis.[7]

References

  1. Wikipedia, "Colares stingray" (CC BY-SA 4.0), which cites: Pollom, R., "Fontitrygon colarensis", 2020; Pollom, R., "Fontitrygon colarensis", 2020 (original not read by us) en.wikipedia.org
  2. Wikipedia, "Colares stingray" (CC BY-SA 4.0), which cites: "A new species of whiptail stingray of the genus Dasyatis Rafinesque, 1810 from the Southwestern Atlantic Ocean (Chodrichthyes: Myliobatiformes: Dasyatidae)", Zootaxa, 2004, p. 1–12 (original not read by us) en.wikipedia.org
  3. Wikipedia, "Colares stingray" (CC BY-SA 4.0), which cites: Pollom, R., "Fontitrygon colarensis", 2020; ; Pollom, R., "Fontitrygon colarensis", 2020 (original not read by us) en.wikipedia.org
  4. Wikipedia, "Colares stingray" (CC BY-SA 4.0), which cites: Pollom, R., "Fontitrygon colarensis", 2020 (original not read by us) en.wikipedia.org
  5. Wikipedia, "Colares stingray" (CC BY-SA 4.0), which cites: "A new species of whiptail stingray of the genus Dasyatis Rafinesque, 1810 from the Southwestern Atlantic Ocean (Chodrichthyes: Myliobatiformes: Dasyatidae)", Zootaxa, 2004, p. 1–12; "Description of females of the stingray Dasyatis colarensis Santos, Gomes & Charvet-Almeida, 2004 (Chondrichthyes: Myliobatiformes: Dasyatidae)", Arquivos do Museu Nacional, Rio de Janeiro, 2007, p. 19–25 (original not read by us) en.wikipedia.org
  6. World Register of Marine Species, Fontitrygon colarensis (AphiaID 1042836). CC BY 4.0. marinespecies.org
  7. GBIF Backbone Taxonomy and occurrence index, Fontitrygon colarensis (taxon key 9338792). CC BY 4.0 (backbone); counts are facts. gbif.org

Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Colares stingray (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.

Related entries

Same family (Dasyatidae)

Atlantic stingray Hypanus sabinus, Black-spotted whipray Maculabatis astra, Blackedge whipray Himantura marginata, Blue stingray Dasyatis chrysonota

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Test yourself

Three questions drawn from this entry’s sources. Pick an answer to check it.

1. To which genus does the Colares stingray belong?

Correct.

Not quite. The answer is Fontitrygon.

2. To which biological family does the Colares stingray belong?

Correct.

Not quite. The answer is Dasyatidae.

3. What is the IUCN Red List category of the Colares stingray?

Correct.

Not quite. The answer is Critically Endangered.

Answers checked against the source article

Sources

Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.

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