Round ribbontail ray (Taeniurops meyeni)

Classification (WoRMS)

Full classification as recorded by WoRMS: Kingdom: Animalia · Phylum: Chordata · Class: Elasmobranchii · Order: Myliobatiformes · Family: Dasyatidae · Genus: Taeniurops.

Accepted name: Taeniurops meyeni · Authority: (Müller & Henle, 1841) · Taxonomic status: accepted · AphiaID: 712972.

Synonyms and superseded combinations recorded for this taxon: Dasyatis melanospilos (Bleeker, 1853); Taeniura melanospila Bleeker, 1853; Taeniura melanospilos Bleeker, 1853; Taeniura meyemi Müller & Henle, 1841; Taeniura meyeni Müller & Henle, 1841; Taeniura mortoni MacLeay, 1883.

Source: World Register of Marine Species (WoRMS) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=712972 (CC BY 4.0). Accessed 2026-09-23.

Biology and life history (FishBase)

Measured values published by FishBase for Taeniurops meyeni. Only fields the database actually holds for this species are shown; these are database values, not aquarium guidance.

Maximum length: 330 cm · Depth range: 1–500 m · Habitat zone: reef-associated · Body shape: other · Vulnerability index: 90 of 100 · Fishery importance: commercial · Aquarium trade: never/rarely.

FishBase notes: Occurs in a wide range of habitats, from shallow lagoons to outer reef slopes (Ref. 1602). Feeds on bottom fish, bivalves, crabs and shrimp (Ref. 5578). Ovoviviparous (Ref. 50449). Smallest free-swimming specimen recorded was 33 cm WD. Caught commonly by demersal tangle net fisheries, and occasionally by longline and bottom trawl fisheries. Utilized for its meat and cartilage (Ref.58048). Found singly or in aggregates and usually with jacks and cobia swimming near them (Ref. 12951). Not normally aggressive, but it has been responsible for at least one human fatality. Sought by surf and ski boat anglers in southern Africa, but usually released unharmed (Ref. 5578). Longevity record for a specimen in an aquarium is 81 days (Ref. 12951). May reach disc width in excess of 3 m (Ref. 28023).

Source: FishBase species summary (SpecCode 6482) — https://www.fishbase.se/summary/Taeniurops-meyeni.html (CC BY-NC 3.0 — non-commercial use only). Accessed 2026-09-23.

Distribution and occurrence records (GBIF)

1,863 georeferenced occurrence records for Taeniurops meyeni are published through GBIF from 50 countries or marine areas. The map above plots 317 distinct locations from a sample of 1,863 records, omitting 29 inland records that carry an institution's coordinates rather than a collection site; it shows where the species has been observed and reported, not a modelled range.

Most records by country or area: Australia (825); Ecuador (282); Maldives (145); Costa Rica (99); South Africa (78).

The full country table, WoRMS marine regions and the sampling notes are on this species' Distribution page.

Source: GBIF Occurrence Search (taxonKey 7193839) — https://www.gbif.org/occurrence/search?taxon_key=7193839&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=712972 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-23.

Conservation status (IUCN Red List)

The IUCN Red List assesses Taeniurops meyeni (Müller & Henle, 1841) as Vulnerable (code VU). No trend, population estimate or threat analysis is given here, because none is available from this source without the Red List API; follow the source link for the full assessment, including its date.

Source: IUCN Red List of Threatened Species (taxon 60162) — https://www.iucnredlist.org/species/60162/0; GBIF IUCN Red List category endpoint (taxonKey 7193839) — https://api.gbif.org/v1/species/7193839/iucnRedListCategory. Accessed 2026-09-23.

Description and natural history (Wikipedia)

Generally nocturnal, the round ribbontail ray can be solitary or gregarious, and is an active predator of small, benthic molluscs, crustaceans, and bony fishes. It is aplacental viviparous, with the embryos sustained by yolk, and later histotroph ("uterine milk") secreted by the mother; up to seven pups are born at a time. Although not aggressive, if provoked the round ribbontail ray will defend itself with its venomous tail spine, and it has been responsible for at least one fatality. It is valued by ecotourist divers and recreational anglers. This slow-reproducing species is threatened by commercial fishing, both targeted and bycatch, and habitat degradation across much of its range. As a result, the International Union for Conservation of Nature (IUCN) has assessed it as Vulnerable.

As Taeniurops meyeni, the round ribbontail ray was described by German biologists Johannes Peter Müller and Friedrich Gustav Jakob Henle in their 1841 Systematische Beschreibung der Plagiostomen, based on two syntypes collected from Mauritius. However, this species is better known under the name Taeniura melanospilos, which was applied by Dutch ichthyologist Pieter Bleeker to a juvenile specimen from Java, in a 1953 volume of the scientific journal Natuurkundig Tijdschrift voor Nederlandsch Indië.

Other common names for the round ribbontail ray include black spotted ray, black-blotched stingray, black-spotted stingray, fantail ray, fantail stingray, giant reef ray and speckled stingray. In Australia, it is one of several species referred to as "bull ray". A minority of authors place this species with the river stingrays in the family Potamotrygonidae. Preliminary morphological examination has suggested that the round ribbontail ray is more related to Dasyatis and Indo-Pacific Himantura than to the congeneric bluespotted ribbontail ray (Taeniura lymma), which is closer to the amphi-American Styracura (S. pacifica and S. schmardae) and the river stingrays.

The ray is named in honor of Franz Julius Ferdinand Meyen (1804–1840), a physician and a botanist, who collected or supplied the type specimens.

The round ribbontail ray has a thick pectoral fin disc wider than it is long, with a smoothly rounded outer margin. The eyes are of medium size and are followed by larger spiracles. There is a short and broad curtain of skin between the oval nostrils, with a finely fringed trailing margin. The mouth is wide and curved, with faint furrows at the corners. There is a row of seven papillae on the floor, with the outermost pair smaller and set apart from the others. There are 37–46 tooth rows in the upper jaw and 39–45 tooth rows in the lower jaw. The teeth are small with a deep groove across the crown and are arranged in a dense quincunx pattern into flattened surfaces.

The pelvic fins are small and narrow. The tail is relatively short, not exceeding the width of the disc, and bears one (rarely two) long, serrated stinging spine on the upper surface. The base of the tail is broad; past the spine, the tail rapidly thins, and bears a deep ventral fin fold that runs to the tail tip. The upper surface of the disc and tail are roughened by a uniform covering of small, widely spaced granules. There is also a midline row of sharp tubercles on the back, with two shorter rows alongside. The first of these tubercles develop at a length of around 46 cm, over the "shoulders" and in the single midline row.

The dorsal coloration is light to dark gray, brown-gray, or purplish, becoming most intense towards the fin margins, with a highly variable pattern of irregular darker mottling and white speckles or streaks. The tail past the spine, including the fin fold, is uniformly black, while the underside is creamy-white with darker fin margins and additional dots. Young rays are more plain in coloration than adults. One of the largest stingray species, the round ribbontail ray can grow to 1.8 m across, 3.3 m long, and 150 kg in weight.

The round ribbontail ray has a wide distribution in the Indo-Pacific region: it is found from KwaZulu-Natal in South Africa northward along the East African coast to the Red Sea, including Madagascar and the Mascarenes; from there, its range extends eastward through the Indian subcontinent to Southeast Asia and Micronesia, occurring as far north as Korea and southern Japan, and as far south as Australia, where it is found from at least Ningaloo Reef off Western Australia to Stradbroke Island off Queensland, including Lord Howe Island. In the easternmost portion of its range, it has been reported from Cocos Island and the Galápagos Islands, with individuals possibly dispersing as far as Central America.

Bottom-dwelling in nature, the round ribbontail ray is typically found close to shore at a depth of 20 - 60 m, though it has been reported anywhere from the surf zone to a depth of 439 m. It favors sand or rubble bottoms in shallow lagoons or near coral and rocky reefs, and may also enter estuaries.

The round ribbontail ray has nocturnal habits and rests motionless for much of the day, often near vertical structures, in caves, or under ledges. It may be solitary, or form small to large groups. This ray is frequently shadowed by one or more jacks or cobia (Rachycentron canadum); these smaller fishes may feed on food stirred up by the ray's activities, or use the ray's body as cover for approaching their own prey. The round ribbontail ray hunts for bivalves, crabs, shrimps, and small bony fishes on the bottom. When feeding, it adopts a characteristic posture in which it presses the margin of its disc against the bottom and takes in water through its spiracles, which it blows through its mouth to uncover prey buried in the sediment. This species may fall prey to larger fishes such as sharks, and marine mammals. When threatened, it raises its tail over its back so that the spine faces forward, and waves it back and forth. Known parasites of this species include the monogenean Dasybatotrema spinosum, Dendromonocotyle pipinna, Neoentobdella garneri and N. taiwanensis, and the nematode Echinocephalus overstreeti.

Little information is available on the life history of the round ribbontail ray. Like other stingrays, it is aplacental viviparous: the unborn embryos are initially sustained by yolk, which is later supplemented by histotroph ("uterine milk", containing proteins, lipids, and mucus) produced by the mother. Reproductive aggregations numbering in the hundreds have been observed at Cocos Island shortly after the onset of La Niña, which brings cooler temperatures. During these periods a single female may be pursued by dozens of males. Females bear litters of up to seven pups, each measuring 33 - 35 cm across and 67 cm long. Off South Africa, birthing may take place in the summer. Males attain sexual maturity at a disc width of 1.0 - 1.1 m; the maturation size of females is unknown.

The round ribbontail ray is not aggressive and has been known to approach and investigate divers. However, if harassed it can inflict a severe wound with its venomous tail spine. This species has been responsible for at least one recorded fatality of a diver who was stabbed while attempting to ride the ray. The round ribbontail ray is popular with ecotourist divers because of its size and spectacular appearance.

The International Union for Conservation of Nature (IUCN) has assessed the round ribbontail ray as Vulnerable.

Source: Wikipedia: Round ribbontail ray — https://en.wikipedia.org/wiki/Round_ribbontail_ray (CC BY-SA 4.0). Accessed 2026-09-23.

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