Cone Breeders - What species should I try?

[PoseidonCichlid]

I know angelfish and discus like to spawn on those ceramic cones, in your experience do other species like to do it as well (will they prefer them over rocks for example?) They can be cichlids or any other fishes, I just got a cone from a discus breeder (I don't plan on trying discus until I work with an easier species first) and since I have a spare tank I wanted to try breeding something fun. All suggestions are welcome, thanks.

 

[emerald76]

Dwarf cichlids might, but many species that are nesters use a flat bit of slate