© George Burgess
If you live in the coastal waters of the Atlantic Ocean, around the eastern shores of the US, the Gulf of Mexico and down the eastern coast of Central/South America, you might have snorkeled by these animals. They’ve been seen in the Pacific Ocean near Yucatan, too! They frequent shallow, coastal waters and like to bury beneath the sand or mud to hide from predators, like sharks. They might have swum by your foot, as they sometimes are seen in seagrass beds.
The Lesser Electric Ray are like the Yellow stingray, with a round body and short tail. Their dorsal pigmentation varies from dark to light brown, with irregular rings/ovals. They lack a spine because why have one when you have electric organs? Not that you can see them if you’re staring down at them- you have to flip these critters over to see two kidney-shaped organs above the gills, by the mouth.
Not that I would want to handle an electric animal… underwater… no thanks, I’ll pass.
Also similar to the yellow stingray, these are small animals. The males usually get no larger than 86 cm (around 33 inches) from the tip of their snout to the end of the tail (total length). Females are smaller, only getting up to 66 cm (26 inches).
“Oh, yes, glorious day to bring my shocking count up to 200… oh, look, a worm. Let me shock it.”
“Marvelous. Next, that plant.”
“And now this rock. To make me feel powerful and almighty.”
Instead, they create a strong charge to stun their prey or defend themselves (aka handle them with caution). They have a zapping organ on either side of their body, making it so that their prey is trapped… and eventually eaten. Yum.
The shock isn't meant for us (their prey upon marine worms, baby snake eels, anemones, small bony fish, crustaceans, etc.), but they have been known to knock humans down with their electric shocks. This shock can vary between 8 volts and 220 volts, depending on the species.
Electric rays are ovoviviparous (bearing live young) and reproduce slowly with a doubling time estimated to be between 4.5 and 14 years.
There are no known conservation measures currently in place for this species. As for many rays, it has been proposed monitoring bycatch. However, it has been recommended that more research be done to figure out life history, distribution, population, taxonomy, etc.
Although there are gaping holes in the understanding of this fascinating animal, they certainly are not animals you want to accidentally startle.
- Vianna, G.M.S. and Vooren, C.M. (2009) Distribution and abundance of the lesser electric ray Narcine brasiliensis (Olfers, 1831) (Elasmobranchii: Narcinidae) in southern Brazil in relation to environmental factors. Brazilian Journal of Oceanography, 57(2): 105 - 112.
- Rudloe, A. (1989) Habitat preferences, movement, size frequency patterns and reproductive seasonality of the lesser electric ray, Narcine brasiliensis. Northeast Gulf Science, 10(2): 103 - 112.
- Dean, M.N. and Motta, P.J. (2004) Feeding behavior and kinematics of the lesser electric ray, Narcine brasiliensis (Elasmobranchii: Batoidea). Zoology, 107: 171 - 189.
- Campbell, A. and Dawes, J. (2004) Encyclopedia of Underwater Life. Oxford University Press, Oxford.
- Lesser Electric Ray Biological Profile, Ichthyology Department, Florida Museum of Natural History (July, 2009)