I Love fish (See my username?). Well I have multiple aquariums, from 5 to 210 gallons. I breed Angelfish and adore them. I also love clown loaches, featherfin catfish, plecos, hillstream loaches, Rams, and Tetras. I also love and own freshwater teacup stingrays. Yay for fish! Cool question!
I used to have a 55 gallon saltwater tank that I really enjoyed. Mostly, though I was interested in animals other than fish - corals, shrimp, starfish, sea urchin etc. Both the starfish and the shrimp could be hand-fed and the cleaner shrimp would go right to work cleaning my hand.
What fish I did have were either unusual or extra beautiful. I liked the koran angelfish we had.