I use to have goldfish. They're pleasant to have in the home, but cleaning the tank is timely and kinda yucky. I later switched to guppies- it's NOT true that guppies and goldfish can cohabitate, my son was the one who noticed a guppy was missing and then we saw a guppy skeleton floating in the corner of the tank. It was then I found out that goldfish will eat anything that fits in their mouths. I'll put a couple of fish in the bathroom when I move into my home for a soothing effect but it'll be only 2 and in a fishbowl. I want canaries, but I worry they may be too loud at night, someone was telling me just to put a cloth over the cage but I also worry about clipping their wings and nails.