Hemitrygon navarrae
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Hemitrygon navarrae |
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| Hemitrygon navarrae | ||||||||||||
| ( Steindachner , 1892) |
Hemitrygon navarrae is a Stechrochenart and lives in the northwestern Pacific Ocean off the coast of the Chinese mainland and Taiwan .
features
Hemitrygon navarrae reaches a disc width of 38 cm with a length of up to 94 cm. It has a diamond-shaped pectoral fin disc that is slightly wider than it is long and ends in tight curves towards the sides and in a pointed triangle towards the muzzle. The whip-like tail carries a single venomous sting. The top is chocolate brown, the bottom is raw white.
Way of life
The ray lives in the Gulf of Bohai as well as in the Yellow and East China Seas on coasts and in river mouths, such as that of the Yellow River . Little is known about his way of life. It is probably ovoviviparous , like most species in the genus. It is often brought in as bycatch by beam trawlers and is marketed primarily in China , but is considered to be of inferior quality. There are practically no inventory figures, which is why its endangerment status is rated by the IUCN as DD (data deficit).
Systematics
The ray species was described in 1892 by the German ichthyologist Franz Steindachner under the scientific name Trygon navarrae , later assigned to the genus Dasyatis . When the Dasyatidae was revised in mid-2016 , the species was placed in the genus Hemitrygon .
Individual evidence
- ↑ Last, PR, Naylor, GJP & Manjaji-Matsumoto, BM (2016): A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights. Zootaxa , 4139 (3): 345-368. doi: 10.11646 / zootaxa.4139.3.2
Web links
- Hemitrygon navarrae on Fishbase.org (English)
- Hemitrygon navarrae on the IUCN Red List