Heliotrygon gomesi
| Gomes's round ray | |
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| Species: | H. gomesi
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| Binomial name | |
| Heliotrygon gomesi M. R. de Carvalho & Lovejoy, 2011
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Heliotrygon gomesi, the Gomes's round ray or China ray, is a species of freshwater stingray native to the western Amazon basin in South America.[1][2] It is the type species of its genus.[1] It spends the day in deep river channels, but moves closer to the shore at night to feed.[3]
Description
This ray reaches a disc width up to 58 cm (23 in).[3] It is uniform gray to light brown above and it lacks any distinctive patterns. In addition to the lack of pattern, this species differs from H. rosai by showing a slender tail width at its base, a slightly larger preorbital snout length, and a proportionally smaller pelvic inner length. It shows angular cartilages.[1] Both species of Heliotrygon have greatly reduced stings, rendering them virtually harmless.[2]
References
- ^ a b c de Carvalho, M.R. and N.R. Lovejoy, 2011. Morphology and phylogenetic relationships of a remarkable new genus and two new species of Neotropical freshwater stingrays from the Amazon basin (Chondrichthyes: Potamotrygonidae). Zootaxa 2776:13-48.
- ^ a b Wheeler, Quentin. "New to Nature No 37: Heliotrygon stingrays". The Guardian. The Guardian. Retrieved 30 August 2015.
- ^ a b Rays of the World. CSIRO. 2016. pp. 620–623. ISBN 9780643109148.
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Further reading
- Ballantyne, J. S., and D. I. Fraser. "Euryhaline elasmobranchs." Fish Physiology: Euryhaline Fishes: Fish Physiology 32 (2013): 125-198.
- Fehlauer‐Ale, Karin H., and D. Timothy J. Littlewood. "Molecular phylogeny of Potamotrygonocotyle (Monogenea, Monocotylidae) challenges the validity of some of its species." Zoologica Scripta 40.6 (2011): 638-658.
- Orsén, Ludvig. "Potamotrygonidae, broskfiskarnas” outsider”."
External links
- "Heliotrygon gomesi" at the Encyclopedia of Life
- "Heliotrygon gomesi". Integrated Taxonomic Information System. Retrieved 30 August 2015.
- FishBase
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