dive into this list of the six best freshwater and saltwater sharks for home aquariums. Size: Up to 13 inches Tank Size: 125 gallons per fish Lifespan: 10 years Water Type: Fresh Aggression Level ...

Why are the sharks making sounds? Researchers have a theory Sharks are among a group of fish that don't have a ... noise when they ate or swam free in a tank. Nieder, now a postdoctoral ...