A big increase in reports of Asian tiger shrimp along the U.S. Southeast coast and in the Gulf of Mexico has federal biologists worried the species is encroaching on native species' territory. The shrimp are known to eat their smaller cousins, and sightings of the massive crustaceans have gone up tenfold in the last year, biologists say.
The black-and-white-striped shrimp can grow 13 inches long and weigh a quarter-pound, compared to 8 inches and a bit over an ounce for domestic white, brown and pink shrimp. Scientists fear the tigers will bring disease and competition for native shrimp. Both, however, can be eaten by humans.
"They’re supposed to be very good," Pam Fuller, a biologist with the U.S. Geological Survey told CNN. "But they can get very large, sort of like lobsters."