What two regions are the crayfish divided into?

What kind of fish is bream. Please you need to know as you are allergic to certain fishes? Is a fish a consumer or herbivore? What does Molly mean? Who got killed by a stingray fish? How do megalodons mate? Is your lionfish pregnant? What is the difference between fish and fishes? What are the strategies of the megamouth? Can you put a heater in a fish bowl? Do you need to change the carbon filter in a 2.5 gallon betta tank every time you clean the tank or just rinse and use for awhile? Is tetra a fish? Can you drink water when you eat fish? What eats a regal tang? Will a hermit crab die if it loses a leg or pincher? If it takes 1 hour to fill a 400 gallon tank how long will it take to fill a 600 gallon tank? Is the red tailed shark a shark or a fish? What are the characteristics Koi fish? Why would your goldspot pleco be chasing smaller? Can a fish be brain dameged? Is a pollack a producer or consumer?