I think there are too many nice fish that I have kept.
1)Discus - king of freshwater aquarium.
Red Melon, Blue Diamond, Tiger stripes, Eruption, Golden Yellow Albino.
2)Bettas - they are probably the second most beautiful after Discus.
From the Halfmoon to Koi Betta Plakat .
3)Apistogrammas:
My favourite are Agassizi Triple Red, Cacatuoides Super Red/Orange, Bitaeniata, Panduro, Borelli.
4)Killifish:
Golden Lyretail Panchax, Bluefin Notho, Black Pearl Killifish.
5)Earth Eater species :
Satanoperca Leucosticta and Jurupari.
6)Neolamprologus Caudopunctatus
7)Black Calvus
8)Electric Blue Dempsey
9)Electric Yellow Lab
10)Demasoni
11)Tropheus Duboisis
12)Electric Blue Rams, Blue Rams, Golden Rams.
13)Synodontis multipunctatus
I think my list will have no end....LOL
@Lajos_Detari You call Discus The King of the freshwater aquarium. That is right on. I have wanted Discus forever but I am not a skilled enough fish keeper to do them justice. I don't want to bring them home just to kill them through my ignorance. They are so stunningly beautiful and graceful that I cannot find words to say how much. Suffice it to say they are the most beautiful of all freshwater aquarium fishes.