......You might be a monster fishkeeper...

[mudskipper]

....if you see cricktes you wonder how many you would have to catch to feed your fish

check

-If you are watching the Fish as if you were watching tv
-When you worry about a fish you just got in your sleep.
-Every morning when you run down to the fish tank to see if the fishes are alright, and then see some missing and then panic, but then realize the fish are right there.

check, check check. i keep having this dream where i have fish with lungs, and swim in midair, so they all keep "swiming" around my house

LOL very true, here's some more.

3. When your in the supermarket you can't help but wonder if your fish would eat that food item and would it be good for them.

check

 

[Sturgeon]

If you've spent more money at your LFS than at your local tavern

you insure your house for flood damage, and actually have used the money to get more fish

humidity hovers around 96% and your house has gutters on the inside to reroute the rain from the thunderhead in the living room

your sump resebles a grain silo

 

[guppy]

That gutter idea bears looking into.

You worry about not being able to find your cat if you accidently left the cover off your tank.