How to Find and Kill Evil Hitchhikers

[Salmon King]

A few years ago in my reef tank I spotted a red and black crab.It was neat looking so I left it in the tank.I had a purple and a Lavender tang dissapere.The next time I saw that little crab it was 6 inches .I caught him and never lost a fish again.A friend of mine had a large brittle star and a bunch of damsils in a tank.He was loosing a lot of fish and could/nt figure it out.One day he saw that star fish snag a fish.He said it was really fast.I always thought they were slow like slugs