I have a few that are uncommon in the hobby but not actually rare in the wild. I like to keep fish are a bit different from the fish everyone else keeps and present a bit more of a challenge to keep.
I'd love to own rare fish, with a view to breeding them. I can't imagine many things more satisfying than breeding a fish that is dying in the wild with a view to tell others how to achieve the same.
Ummmmm not really. Possibly the new cichlids are slightly more unusual (Labeotropheus Trewavasae, Labidochromis Perlmutt and Pseudotrophus Socolofi) and I guess my collection of synos is slightly unusual, but not truly uncommon. Almost all mine are in my siggy 'fishlist'.
Hugs,
P.