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The Atlantic Stingray (Hypanus sabinus), formerly Dasyatis sabina, is a small, estuarine and coastal marine ray belonging to the family Dasyatidae. It is characterized by its diamond-shaped disc, typically wider than long, and a relatively short, whip-like tail bearing one or more venomous serrated spines. This species is notable for its ability to tolerate a wide range of salinities, frequently inhabiting freshwater environments for extended periods.
Physical Characteristics
- Body shape
- flat
- Coloration
- Dorsal surface typically light brown, yellowish-brown, or olive-gray, often with darker mottling or spots. Ventral surface is white or off-white. Some individuals may exhibit a faint dark stripe along the midline of the back.
- Scale type
- placoid
- Mouth position
- inferior
- Distinctive features
- Diamond-shaped disc, slightly wider than long, with rounded corners., Snout is short and broadly rounded., Eyes are small and located dorsally, followed by spiracles., Tail is relatively short, whip-like, and bears one or more venomous serrated spines, usually located about halfway down the tail., No dorsal fins; a small caudal fin fold may be present on the tail.
- Dorsal fin
- Absent
- Tail fin
- Whip-like, with a small, low caudal fin fold (dorsal and ventral) in some individuals, but often absent or vestigial. Bears one or more venomous serrated spines.
- Pectoral fin
- Large, forming the 'wings' of the disc.
- Distinctive fins
- Pelvic fins are small and located beneath the disc.
Identification Tips
Disc Shape
Look for a diamond-shaped disc that is slightly wider than it is long, with a broadly rounded snout.
Tail Spines
Note the presence of one or more venomous serrated spines on the dorsal surface of the tail, typically located about halfway down its length.
Coloration
Observe the light brown to olive-gray dorsal coloration, often with subtle mottling, and a white ventral surface.
Habitat
Its presence in freshwater or highly brackish environments is a strong indicator, as few other ray species tolerate such conditions.
Habitat
- Water type
- brackish
- Depth
- Typically found in shallow waters, from a few centimeters to about 25 meters (82 feet).
- Environment
- Estuaries, coastal lagoons, bays, tidal creeks, and occasionally freshwater rivers and lakes. Prefers soft, sandy, or muddy bottoms where it can bury itself. Tolerant of a wide range of salinities, from full marine to pure freshwater.
- Geographic range
- Western Atlantic Ocean, from Maryland, USA, south along the U.S. coast, throughout the Gulf of Mexico, and along the coast of Mexico to the Yucatán Peninsula.
Aquarium Information
- Care level: advanced
- Temperament: peaceful
- Diet: carnivore
- Minimum tank size: 500 gallons (for a single adult)
- Temperature: 20-26°C (68-79°F)
- pH level: 7.5-8.4
- Hardness: 1.018-1.025 specific gravity (for marine/brackish); adaptable to freshwater
- Compatibility: Generally compatible with other large, peaceful, bottom-dwelling fish that cannot be preyed upon. Avoid aggressive or fin-nipping species. Requires a large, sandy-bottomed tank.
- Special requirements: Requires a very large tank with a soft, sandy substrate for burrowing. Excellent filtration is essential due to their messy feeding habits. Water quality must be pristine. Not recommended for novice aquarists due to size requirements and specialized care.
Wild Information
- Conservation status: least concern
- Seasonality: Present year-round in warmer waters; may move to deeper, warmer waters during colder months in northern parts of its range. Spawning typically occurs in spring/early summer.
- Market price: Not typically commercially fished for human consumption; occasionally caught as bycatch.
- Commercial importance: low
- Taste: Mild, slightly sweet, often compared to scallops or chicken.
- Texture: Firm, flaky, cartilaginous.
- Cooking methods: Fried, Baked, Grilled, Sautéed
- Nutritional value: Lean protein source, low in fat.
Key Facts
Freshwater Toleranceamazing
The Atlantic Stingray is one of the few elasmobranchs (sharks and rays) capable of spending extended periods, even its entire life cycle, in freshwater environments, demonstrating remarkable osmoregulatory adaptations.
Taxonomic Reclassificationinteresting
This species was formerly classified under the genus Dasyatis (Dasyatis sabina) but was reclassified to Hypanus (Hypanus sabinus) in 2016 based on molecular phylogenetic studies.
Burrowing Behaviorbehavior
Atlantic Stingrays frequently bury themselves in soft sediments, leaving only their eyes and spiracles exposed, as a method of camouflage to ambush prey and avoid predators.
Dietary Habitsbehavior
Their diet primarily consists of small invertebrates such as worms, crustaceans (shrimp, crabs), and bivalves, which they locate using electroreception and extract from the substrate.
Safety Information
Venomous- Safety level: venomous
- Venomous: Yes
- Edibility: edible
- Handling notes: Atlantic Stingrays possess one or more venomous serrated spines on their tail. Stings are painful and can cause swelling, nausea, vomiting, and muscle cramps. While rarely life-threatening, medical attention is recommended. To avoid stings, shuffle feet when wading in shallow, sandy areas to alert rays to your presence, allowing them to swim away. If handling, use extreme caution and secure the tail to prevent lashing. Never handle the ray by the tail near the spine.
Similar Species
Bluntnose Stingray
Hypanus say
The Bluntnose Stingray (Hypanus say) has a more angular, less rounded disc and a longer, more slender tail. Its coloration is typically darker, often uniformly dark brown or gray, and it generally prefers higher salinity environments, though some overlap occurs.
Southern Stingray
Hypanus americanus
The Southern Stingray (Hypanus americanus) is significantly larger, has a more pointed snout, and a much longer tail with a prominent dorsal keel. It is primarily a marine species and rarely enters freshwater.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Chondrichthyes
- Order
- Myliobatiformes
- Family
- Dasyatidae
- Genus
- Hypanus
- Species
- sabinus
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