The gold form of the microgeophagus ramirezi is a natural color variety... they haven't bred the gene out as much as isolated it and used it to make gold rams. Same species... just another color form. The balloon shape is the malformed swim bladder gene that has been isolated and used to create this new shape. Some bob around in the water like corks, but I supposed I've expressed my dismay about these fish and shouldn't bother again.
The long fins are just another isolated gene, but at least line breeding for long fins doesn't cause a degradation of the species.
Cathy