do piranhas breathe air

Why are great white sharks good predators of sea otters? Do tuna eat clownfish? Is your platy sick or pregnant if she is resting on the gravel by the heater? What does mermaid eggs look like? Where is the worlds largest freshwater fishery dollar value? What is the degree of damage caused by salmonella typhimurium? Are koi British? After just buying a male and female guppy how long does it take to get the female pregnant in a one gallon fish bowl? What is the process of making smoked salmon? What weapon does mako use in his battle against tupa? What are two advantages of a man made pond? Why doesn't gills work on land? Are goldfish and guppies compatible? What is a glo fish? Will bentonite harm fish in a pond? When do you add sea monkey eggs in the purified water? What are tah shell of shrimp clams and crab made of? How can you tell the different between male and female guppies? What is the Price per Pound of Halibut? How do you tell if a guppy is dying?