They do this to rats sometimes too
. There's a special breed of taillness rats. Tailless rats are hard to breed and rare. They have a special body shape to them. Some unscuplious sp? people simple chop off baby rat pinkies' tails...TA DAH, instant tailless rats minus the difficulty of breeding them.
I think I've seen the so called "heart" parrot cichlids before and had no idea they were purposely mulitated...I already dislike parrot cichlids because of their crocked backbones and bent mouths ( they sell special food for them because they can't eat normally) and am glad they are getting less popular.