Rhinoptera bonasus (Mitchill, 1815)

Cownose ray

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Elasmobranchii \| Rajiformes \| Myliobatidae \| Rhinopterinae
Synonyms	Raja bonasus, Rhinoptera affinis, Rhinoptera lalandii, ... more
Common names	Cownose rays, Gavilan manchado, Gavilan mancha, ... more

You can sponsor this page

Upload your photos and videos
| All pictures | Google image |

Image of Rhinoptera bonasus (Cownose ray)

Picture by Schneider, O.

Play sound

Add your observation in Fish Watcher

This map was computer-generated and has not yet been reviewed.

AquaMaps Data sources: GBIF OBIS

Main reference

Robins, C.R. and G.C. Ray. 1986. (Ref. 7251)
Other references | Biblio | Coordinator : McEachran, John | Collaborators

Size / Weight / Age

Max length : 213 cm WD male/unsexed; (Ref. 4441); common length : 120 cm WD male/unsexed; (Ref. 5217)

Environment

Benthopelagic; oceanodromous (Ref. 51243); brackish; marine; depth range 0 - 22 m (Ref. 26912)

Climate / Range

Tropical; 42°N - 1°S, 99°W - 12°W (Ref. 55259)

Eastern Atlantic: Mauritania, Senegal and Guinea. Western Atlantic: southern New England to northern Florida (USA) and throughout the Gulf of Mexico, migrating to Trinidad, Venezuela, Brazil and Uruguay (Ref. 7251).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Deep grove around front of head below eyes; forehead above groove indented, snout below groove is distinctly bilobed (Ref. 26938). Disk brown to olive above, with no spots or marks, wings long and pointed (Ref. 7251). Lower surface white or yellowish white (Ref. 6902).

An oceanic species sometimes found near the coast (Ref. 5217). Forms segregated schools (Ref. 12951). Jumps occasionally, landing with a loud smack, probably as a territorial display. Migrates south in large schools that disappear off northern Florida, USA and are not reported from Caribbean Is.; tagged fish have been recovered in northern South America (Ref. 7251). Population in the Gulf of Mexico migrates clockwise; schools of up to 10,000 rays leave west coast of Florida for Yucatan, Mexico in the fall (Ref. 7251). Ovoviviparous (Ref. 50449).


IUCN Red List Status (Ref. 57073)	Threat to humans
Near Threatened (NT)	Traumatogenic (Ref. 4690)

Human uses
Fisheries: minor commercial; aquarium: public aquariums


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| Bio-Quiz \| E-book \| Field guide \| Identification keys \| Length-frequency wizard \| Life-history tool \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

Download XML
Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate to high vulnerability (45 of 100)	Medium

Entered by Froese, Rainer

Modified by Torres, Armi G.

Back to Search

Fish Forum

Comments & Corrections

Sign our Guest Book

FishBase mirror site : US - CGNET

Page last modified by : elaxamana, 15 July 2009

Custom Search