RubenD wrote:

What are the chances of people getting diseases/parasites from a fish tank
since we are kind of breeding them in a closed enviroment, and what are we
more expose to?.

The only thing I know of that you can catch from your fish is piscine
tuberculosis. This is not the same as human TB, and is usually misdiagnosed by
doctors. Fortunately, it's rare in fish (I've seen one case in my tank since
1974) and easily diagnosed in the fish.

I do know of one person who is allergic to the types of frozen foods usually fed
to fish. He owns an LFS, so he has other people handle the food.

You're much more likely to incur liability with your choice of fish. If you're
nervous, avoid poisonous critters like lionfish, urchins, etc., and avoid
anything that might bite.

George Patterson
Forgive your enemies. But always remember who they are.