I don't know how many of you have aquariums, or more specifically, experience with my new found love. Sorry if this gets a bit long, but this is the story... I have a 30 gal freshwater aquarium that I got for christmas. It is now heavily planted, but only has a few fish and a very cute cherry shrimp. Over the past few months, it's become infested with snails. I loathe the snails. They are evil, and mar my underwater greek theme. I did some research, and was advised against commercial snail killers and such, as they will end up killing the plants and fish as well. I did read somewhere that a puffer fish is the only fish that eats snails, but I haven't seen any in my local pet stores. Well, during a late night trip to Wal-Mart yesterday, I came across a tank of "green spotted puffers". They're cute, and resemble little spotted blimp-shaped aliens. I purchased one, hoping he would take a whack at my snail population. I've read that they get aggressive, so the shrimp and other fish moved to a small 10 gallon spare tank I had...and in goes the puffer, into the 30 gal. This was late-night. This morning, around 7am... there are two tiny snails left that I can see in the tank. And one slightly-fatter puffer fish. No snails in the plants, no snails on the decorations, no snails on the glass. The last two snails have since disappeared. My question is, I've been reading contradicting information about these little fish all morning. They either need brackish water, or fresh. He seems to be doing fine in fresh water at the moment. Does anyone here have a brackish tank? Or a puffer?