It is really normal for deformities. I have had that trait and others appear in many cichlids that I have bred over the last 25 years. you know that cichlids..fish lay many..hundreds or even thousands of eggs depending on sps, to assure survivability. Many of the recesive genes may become visible if during the genetic crossing over of both parents genes, both parents pass that trait to the embryo, and no other trait to mask it and keep it recesive, it now becomes dominant. Normally though in the wild this fish would be eaten, as it may, key word...MAY, not be as strong as a normal shapped fish, and casue it to be picked off early in life, but anything can happen. In an aquarium setting you eliminate predators, you supply plenty food, so many of the same brood make it to adulthood, were as in nature 1 individual of each brood is even lucky to make it to 1 year of life. To sumarize, these deformatiues and others are common, and appear more in artificial settings as you eliminate the survival of the fittest rule.
