Common Torpedo Ray
Torpedo torpedo
- Diet
- An ambush predator feeding mainly on small benthic bony fishes; large decapod crustaceans are a minor secondary food source. Juveniles also eat a variety of invertebrates.
- Range
- Native to the Mediterranean Sea and the eastern Atlantic Ocean, from the Bay of Biscay to Angola.
- Habitat
- A bottom-dwelling ray usually found close to shore over soft substrates, especially sandy flats and seagrass beds, typically at 2–70 m and occasionally reported as deep as 400 m.
- Lifespan
- Maximum longevity: 10 years in the wild
- Activity
- Solitary and nocturnal; it often rests on the seafloor, partly buried in sediment.
- Reproduction
- Aplacental viviparous: embryos are nourished by yolk and histotroph, or “uterine milk,” produced by the mother. Females have an annual reproductive cycle and produce litters of up to 28 young; gestation lasts 4–8 months, with timing and litter size varying by region.
- Conservation
- Vulnerable (IUCN assessment; 2021)
- Defenses
- Its electric organs can produce shocks of up to 200 volts. The ray uses these discharges to stun prey and deter threats, sometimes in brief bursts called trains.
- What to notice
- The common torpedo usually carries five blue ocelli—eye-like spots—arranged symmetrically on its back, but individuals may have anywhere from zero to nine.
- Finding food
- It hunts by ambush: after stunning prey with electricity, it uses movements of its broad disc to guide the immobilized animal to its mouth and swallows it whole.
- Life cycles
- Although it is a ray, it can give birth in both seawater and less-salty settings such as estuaries and lagoons—a documented feature unusual among sharks and rays.
- Life cycles
- Newborns can produce electric shocks of up to four volts. After four months, they nearly double in weight and can generate 26 volts.
Facts
- Its electric organs can produce shocks of up to 200 volts. The ray uses these discharges to stun prey and deter threats, sometimes in brief bursts called trains.
- The common torpedo usually carries five blue ocelli—eye-like spots—arranged symmetrically on its back, but individuals may have anywhere from zero to nine.
- It hunts by ambush: after stunning prey with electricity, it uses movements of its broad disc to guide the immobilized animal to its mouth and swallows it whole.
- Although it is a ray, it can give birth in both seawater and less-salty settings such as estuaries and lagoons—a documented feature unusual among sharks and rays.
- Newborns can produce electric shocks of up to four volts. After four months, they nearly double in weight and can generate 26 volts.
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