I am currently raising angels but I really like oscars. Puppy dogs of the fish world. My father raised them in a home built massive tank. I got to feed them and my mother would mop up the floor afterwards.
To eat I really like fresh caught blue cod, and brook trout.
Goes without saying Corydoras (all types) are my favourite, but oddly enough weather loaches are another favourite. When I had some they were so fun to watch and just quite an interesting fish.
To eat battered cod with a bit of salt is easily the best.
Clown loach aka Chromobotia macracanthus.
Altum angels aka Pterophyllum altum
Any of the B&W Hypancistrus from the Big Bend of the Rio Xingu (zebra, L173, L236 which I believe is a natural Hybrid).