Rhinoptera javanica

MÜLLER & HENLE, 1841


Javanese cownose ray
Classification: Elasmobranchii Myliobatiformes Rhinopteridae

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

Rhinoptera javanica MÜLLER & HENLE, 1841

Synonyms / new combinations and misspellings
Rhinoptera adspersa

Types
Rhinoptera javanica
Syntype: MNHN: 3478; MNHN: 2450; RMNH: ?
Rhinoptera adspersa
Holotype: MNHN: 3482;


Description :


Citation: Rhinoptera javanica MÜLLER & HENLE, 1841: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2018

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Rhinoptera javanica MÜLLER & HENLE, 1841, Gautami Godavari Estuary, Kakinada Bay , on East Coast of India © Dr. Padmavathi Devarapalli, FishBase Collaborator 1675, Kakinada-533003, Andhra Pradesh, INDIA
Common names
fra \(T\) Mourine javanaise, eng Cownose ray, eng Eagle ray, eng Flapnose ray, eng Flapray, eng Javanese cow ray, eng Javanese cow-nose ray, eng Javanese cownose ray, eng Javanese cowray

Short Description
Double-lobed snout and indented forehead; jaws usually with 7 rows of plate-like teeth; no caudal fin [536]. Brown above, white below [536].

Distribution
Indo-West Pacific: off Durban, South Africa and ranging north possibly to India, Thailand, Indonesia, and southern China. Also in Okinawa, Ryukyu Islands (Ref. 637). Possibly Australia (Ref. 9862). Source: www.gbif.org

Human uses
fisheries: commercial; gamefish: yes

Biology
Males court by nipping the female"quot;s dorsum. Mating pair orient in a venter to venter position, and the male inserts one or both claspers. The pair usually rests on the substrate, with the female on top of the male. Mating lasts about 30 seconds [1658] to 1 minute (Ref. 49562). 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]. Size at birth ~60 cm WD. One large pregnant female (~130 cm WD) contained a single late-term embryo 61 cm WD [2539]. Found in bays, estuaries, and near coral reefs [1658], over sand and mud bottoms (Ref. 9710). Large schools with up to 500 individuals have been reported [1658]. Feeds on clams, oysters and crustaceans[17641]

Size / Weight / Age
150 cm WD (male/unsexed; (Ref. 9862)); max. published weight: 4,500 g (Ref. 3965)

Habitat
reef-associated; brackish; marine

Remarks
shark-references Species-ID=6065;

Parasites (arranged by Jürgen Pollerspöck)
Monogenea
  • Benedeniella macrocolpa (LÜHE, 1906) YAMAGUTI, 1963 [17150] [21222]

Cestoda
  • Eniochobothrium gracile SHIPLEY & HORNELL, 1906 [16338]
  • Eniochobothrium qatarense AL KAWARI, SAOUD & WANAS, 1994 [16170]
  • Halysioncum rhinoptera (SHIPLEY & HORNELL, 1906) [16430] [19536]
  • Phyllobothrium rhinoptera VIJAYALAKSHMI & SARADA, 1996 [8187]
  • Tetrarhynchobothrium unionifactor (SHIPLEY & HORNELL, 1904) [16255] [16112]

Isopoda