Do hagfish live in salt water or fresh water?

Why does a shark have a nose when it breathes through gills? What do large mouth bass fish eggs look like? More types of fish can be found in the states waters than anywhere else in the world? Where can one play fish tank games online? What abiotic things effect seahorses? Why fertilize rice paddies? Which types of fish are not halal? What is the hard rounded disks for protection for fish called? Is seahorse a mammal? How come the blue male Betta fish gets fat? I have to sell a Shimano Banham 100EX and 2 Kastmaster Acme Tackle Co for two different weights of fish. Would these be worth any money? How does a bull shark hunt its prey? Why do mermaids like men? Can garra rufa fish live in outside pond? How many times will a tooth of great white shark be replaced in1 year? How fast is a minnow? What eats a smolt salmon? Do clown fish sleep day or night? Is fish a protective food? What is a scandinavin goblin called?