Do hermit crabs live in the Twilight Zone?

Is the bull shark the deadliest shark in the world? You have 2 goldfish in about a 5 liter fish bowl its always dirty you have been cleaning it out about once every 2 days you know this is way to much but why is the water getting so dirty so fast? What are predators of the anglerfish? Can fish make its' own food? Do some snails eat fish? Will a black light create allege in your fish tank? How long does it take smallmouth bass to digest? What state has the most fish? What does barracuda roe look like? How will feeding fish with fish food affect the survival of the fish? Is the Bethany Hamilton shark a great white? Where is the rainbow trout native to? Why are there so many fish in the world? Which industry sector does fisheries belong? How do you measure your large mouth bass correctly? How much would a 200 gallon fish tank weigh empty? Is a lamprey a bony fish? Where is Chloe rocks? What is the difference between scottish salmon and wild king cooper river salmon? Does a swordfish have a brain?