Im just gonna say something that is going to defy the belief
Basically, a few months back i brought 2 female DP's
put them in a VERY VERY heavily planted 20gallon tank! days went passed, and i noticed that the larger female would seek out the smaller one and attack her, it was upsetting, but it went on and on; gradually the small female became very very shy and timid... anyway, i went out one day; got back and the larger one had passed away :'( So i decided to put the female (mr.wally) in the community tank, months have now passed, and she has grown; but has remained very shy and timid; the tank has 2 rams in and rummy nose tetras, a BN pleco and a Flying fox; she hasnt touched them at all, she minds her own business, she will swim around, and the rams and tetras do not mind at all; infact she always gives them the classic sideways glance to say "please dont hurt me" she is one of a kind i think!
now i put it down to the bulling she used to receive, but she is full size now, and she is brilliant! it's worked for me, and i think im lucky; but dont risk it!
BUT THEY SHOULD BE SPECIES ONLY LIKE YOUNGFISHER SAID!