Hemitrygon akajei

(MÜLLER & HENLE, 1841)


Red stingray
Classification: Elasmobranchii Myliobatiformes Dasyatidae

Reference of the original description
MÜLLER, J. & HENLE, F.G.J. (1841)
Systematische Beschreibung der Plagiostomen. Berlin, Veit, pp. 1–200

Image of the original description

Hemitrygon akajei (MÜLLER & HENLE,1841)

Synonyms / new combinations and misspellings
Dasyatis akajei, Dasyatis akajel, Dasyatis cf. akajei, Dasybatus akajei, Trygon akajei, Trygon (Trygon) akajei

Types
Hemitrygon akajei

Dasyatis akajei
Lectotype: RMNH: 4255a Paralectotype: RMNH: D2456 RMNH: D2451 RMNH: D2452 RMNH: D2449 RMNH: 4255b RMNH: D2450


Description :


Citation: Hemitrygon akajei (MÜLLER & HENLE, 1841): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 02/2019

Please send your images of "Hemitrygon akajei" to info@shark-references.com

Hemitrygon akajei (MÜLLER & HENLE, 1841), © FAO, www.fish-base.org
Common names
deu \(T\) Peitschenrochen, deu \(T\) Stechrochen, spa Pastinaca, spa Raya látigo del Pacífico, fra \(T\) Pastenague du Pacifique, eng Brown stingray, eng Estuary stingaree, eng Japanese red stingray, eng Japanese stingray, eng Red skate, eng Red stingray, eng Whip ray, eng Whip stingray, eng Whipray, eng Yellow stingray, ita Pastinaca, ita Trigono, por Uge do Pacífico

Short Description
Disc rhomboid, anterior margin straight, posterior margin convex. Snout triangular and slightly produced. dorsal keel present on tail. Adults with small spines on disc and posterior part of tail. Brown dorsally and some with orangish pectoral fin margins, in front of eyes, behind spiracles, on the sides of the tail just anterior to the sting. Ventrum orangish red.

Distribution
Western Pacific: southern Japan to Thailand. Also known from Fiji and Tuvalu [20066]. Source: www.gbif.org

Human uses
fisheries: commercial; aquarium: commercial

Biology
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures [733]. Distinct pairing with embrace [17086]. Inhabits sandy areas in coastal waters [17641]; also coral reefs (Ref. 58534).

Size / Weight / Age
200 cm TL (male/unsexed; (Ref. 637)); max. published weight: 10.7 kg (Ref. 40637)

Habitat
demersal; oceanodromous [17660]; brackish; marine; depth range 10 - ? m [1658]

Remarks
shark-references Species-ID=14615;

Parasites (arranged by Jürgen Pollerspöck)
Monogenea
Cestoda
Nematoda
Copepoda
Isopoda
  • Gnathia capillata NUNOMURA & HONMA, 2004 [21435]
  • Gnathia sp. [21440]
  • Gnathia trimaculata COETZEE, SMIT, GRUTTER & DAVIES, 2009 [17188]

Hirudinea