How many gills do a salmon have?

How do eels breathe? Is the fisherman and his wife folk or fable? What is th function of denticles? Is St. Paul a fisherman? Can guppies survive off elodea? What are advantages of starfish? Are mermaids attracted to ambergris? What trophic level do sharks occupy? Is it true that fish only grow to their environment? What sort of things do larvae eat? What does it mean when a black molly fish is swimming upside down? Can a hamster live in a twenty gallon tank? Why does your Siamese fighter male swim rubbing itself? Where to place the arowana's aquarium in the house? What temperature do you need for platys? How do fish have baby? How long does it take for a fry to grow? Unjumble to make a sentence long the eel-like the to with move neck began animal? Do sharks have a nest? What would cause fish to die from what looks like fin rot from a tank that was setup 33 gallons of water and substraight eventhough the fish thrived for 2 months before the tank went cloudy?