Not just a
huge collection of
Elasmodiver.com contains images of sharks, skates, rays, and a few
chimaera's from around the world. Elasmodiver began as a simple web
to help divers find the best places to encounter the different
species of sharks and rays that live in shallow water but it has
slowly evolved into a much larger project containing information on
all aspects of shark diving and shark photography.
now more than 10,000 shark pictures and sections on shark
evolution, biology, and conservation. There is a large library of
reviewed shark books, a constantly updated shark taxonomy page, a
monster list of shark links, and deeper in the site there are
numerous articles and stories about shark encounters. Elasmodiver is
now so difficult to check for updates, that new information and
pictures are listed on an Elasmodiver Updates Page that can be
Rhomboid disc with rounded pectoral tips and straight leading edges. Thorns
scattered on midline of back and prominent thorns along midline and sides of
tail. Tail approx twice body length with deep ventral finfold. Dorsum grey-brown
to olive-brown. Ventrum pale. Adults may display a diagonal row of spots from
mid pectoral level with eye to just before base of tail. Another parallel row of
white spots runs along either side of center-line from mid back to tail.
disc width 220cm. At birth 34-37cm.
and mud bottoms from intertidal to 275m. Inhabits coastal areas, estuaries, and
Western Atlantic - Georges Bank to Florida, Gulf of
Mexico, and Uruguay to Southern Brazil. Subtropical; 45°N - 35°S, 90°W -
Preys on teleost and cartilaginous fishes, crustaceans, and cephalopods.
The IUCN lists the Roughtail
Stingray as LEAST CONCERN. However, the assessment is out of date and still
refers to populations on both sides of the Atlantic. Consequently, the following
information should not be relied upon to determine policy.
This stingray is taken by demersal trawl, gillnets, longlines, and hook and line
(Stehmann 1981). Fishing pressure is intense throughout the range of this
coastal ray and it is considered Vulnerable in Rio de Janeiro Municipality (Buckup
et al. 2000). Brazil has reported among the highest capture production of
elasmobranchs to FAO in recent years (Bonfil et al. 2005). Coastal species are
the most important commercial elasmobranchs in the Southwest Atlantic and
fishing pressure is intense throughout much of the relatively shallow habitat of
this species (Bonfil et al. 2005). Skate and ray landings in the artisanal
fishery in the Rio Grande do Sul, southern Brazil have declined significantly
since the early 1950s (Klippel et al. 2005). One female specimen was recorded in
a year's sampling of the landings of artisanal fleet at Caicara do Norte in
northeastern Brazil (Yokota and Lessa 2006). Like many elasmobranch species,
anecdotal evidence from interviews with fishermen (from Caiçara do Norte, Rio
grande do Norte State, northeastern Brazil) indicate that the D. centroura is
more rarely caught now than previously (L. Yokota pers. comm. 2006).
Coastal trawling effort is also intense in Argentina, where batoids are an
important resource in most demersal trawl fisheries (Tamini et al. 2006). A
coastal multispecies demersal trawl fishery operates at Quequén (38°37S, 58°50)
down to about 60 m depth, in which bycatch of batoids fluctuates seasonally
between 44.5% and 67.5% of total capture (Tamini et al. 2006). The species is
apparently only rarely captured in Uruguay (A. Domingo pers. comm).
Fishery industries tend to show an interest in large dasyatids as a source of
minced fish products, implying that exploitation pressure and population
depletion may increase in the future.
Northwest Atlantic: This species is not targeted in US waters of the Northwest
Atlantic and the available data on population trends suggest stable populations
off the east coast of the USA. Although there is some bycatch in shrimp and
groundfish trawl and bottom longline fisheries (G. Burgess pers. comm.), the
impact is considered to be minimal.
Banks, North Carolina, USA.
The Southern Stingray and Bluntnose Stingray share
some of the Roughtail Stingray's range but neither have the telltale thorny tail.
Reaction to divers:
May be approached with non threatening movements.
Possibly a regular sight on wreck dives on the Outer Banks although I have only
seen it once.
Other diving locations submitted by readers:
Tim Costikyan wrote:
I spotted two roughtail
Stingrays off Zach's Beach in
Marthas Vinyard in about 8' of water (july 24 2006).
R.S., Furtado, M., Snelson, F., Piercy, A.,
Grubbs, R.D., Serena, F. & Mancusi, C. 2016. Bathytoshia centroura. The IUCN
Red List of Threatened Species 2016: e.T63152A104065289. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T63152A104065289.en.
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