Sharks are becoming a popular feature in home aquariums, but there’s a clear distinction between freshwater and saltwater species. Freshwater sharks aren’t “true” sharks; they are small fish with ...

Florida's sewer systems connect to the same water that exotic fish have been colonizing for decades — which means the right ...

Researchers supported by FAPESP recorded lemon sharks (Negaprion brevirostris) preying on an invasive species, the jaguar cichlid (Parachromis managuensis), for the first time. This observation was ...