Hyuga fanray

The Hyuga fanray (Platyrhina hyugaensis) is a type of ray of the family Platyrhinidae. It is an endemic species of southern Japan and inhabits shallow region at the depths of 1–50 m (3 ft 3 in – 164 ft 1 in).[2] The population of this ray are decreasing due to continuous human exploitation.[1][3]

Hyuga fanray
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Superorder: Batoidea
Order: Torpediniformes
Family: Platyrhinidae
Genus: Platyrhina
Species:
P. hyugaensis
Binomial name
Platyrhina hyugaensis
Iwatsuki, Miyamoto & Nakaya, 2011[2]
Range of Hyuga fanray

Description

The Hyuga fanray can be differentiated from its congeners because of numerous characteristics, including a pair of thorns on anterior part of scapular section, a row of thorns on mid-dorsum of tail, and dermal denticles of uniform size and shape covering the dorsal surface.[2]

Habitat and distribution

This species is known to live in the continental shelf at depths of 1–50 m (3 ft 3 in – 164 ft 1 in). Its endemic and common habitat is Hyūga Sea in southern Miyazaki Prefecture, although there have also been several discoveries in Kagoshima and Mie Prefectures.[1][2]

The Hyuga fanray experiences a decline in population because it is often taken as bycatch with gillnets or trawls, and probably is used for human consumption.[1] It is predicted that the ray has undergone a population depletion of up to 49% over the past 21 years.[1]

References
  1. Rigby, C.L.; Derrick, D.; Tanaka, S.; Yamaguchi, A. (2021). "Platyrhina hyugaensis". IUCN Red List of Threatened Species. 2021: e.T169234837A169234849. doi:10.2305/IUCN.UK.2021-1.RLTS.T169234837A169234849.en.
  2. Iwatsuki, Y.; Miyamoto, K.; Nakaya, K.; Zhang, J. (2011). "A review of the genus Platyrhina (Chondrichthys: Platyrhinidae) from the northwestern Pacific, with descriptions of two new species". Zootaxa. 2738: 26–40. doi:10.11646/zootaxa.2738.1.2.
  3. "WoRMS - World Register of Marine Species - Platyrhina hyugaensis Iwatsuki, Miyamoto & Nakaya, 2011". www.marinespecies.org. Retrieved 2023-03-15.
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