Heliotrygon gomesi

CARVALHO & LOVEJOY, 2011



Classification: Elasmobranchii Rajiformes Potamotrygonidae

Reference of the original description
DE CARVALHO, M.R. & LOVEJOY, N.R. (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

Image of the original description
Image in copyright.

Types
Heliotrygon gomesi
Holotype: MZUSP: 104988; Paratype: AMNH: 251884; ANSP: 178014; ANSP: 178015; ANSP: 178016; ANSP: 178017; MZUSP: 108203;

Images of types

Description :


Citation: Heliotrygon gomesi CARVALHO & LOVEJOY, 2011: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 11/2018

Please send your images of "Heliotrygon gomesi" to info@shark-references.com

Heliotrygon gomesi DE CARVALHO & LOVEJOY, 2011 ANSP 178017, 224 mm DW, Rio Nanay, Rio Amazonas basin, © Mark Sabaj Pérez
Common names
Gomes’s round ray

Short Description
A species of Heliotrygon diagnosed by its unique dorsal color pattern, composed of a uniform gray to light tan or brown color, without strong vermiculations, rosettes or other conspicuous patterns dorsally. Heliotrygon gomesi is tentatively further separated from H. rosai (described below) by presenting a slightly more slender tail width at base (holotype tail width 4.5% DW vs. 5.6% DW in holotype of H. rosai), slightly greater preorbital snout length (holotype preorbital snout length 33.2% DW vs. 31.0% DW in holotype of H. rosai), and proportionally smaller pelvic inner length (2.1% DW in holotype of H. gomesi, and ranging from 1.0 to 3.3% DW in all specimens, with a mean of 1.9% DW vs. 4.6% DW in holotype of H. rosai, ranging from 1.3 to 4.9% DW in all specimens, with a mean of 3.7% DW) (Ref. 86515).

Distribution
South America: Brazil. Distributed in the upper Rio Amazonas basin according to the material studied, but suspected to enter the lower reaches of most major tributaries and the lower Rio Amazonas basin as well (Ref. 86515). Source: www.gbif.org

Biology
Tropical; 4°N - 5°N, 70°W - 71°W

Size / Weight / Age
Max length : 13.5 cm WD male/unsexed; (Ref. 86515)

Habitat
Benthopelagic; freshwater

Remarks
65944

Parasites (arranged by Jürgen Pollerspöck)
Monogenea
  • Potamotrygonocotyle tatianae DOMINGUES & MARQUES, 2011 [14308]