Balloon Belly Molly, Assorted. 10 gallon tank. Live bearers so only one gender (males?) and they mix well with other community fish.
As balloon mollies have been interbred to achieve a specific appearance, they have a shorter life expectancy than other molly species. Their large belly is actually a result of a spinal deformity, which carries with it some associated health problems. On average, they will only live for one to one and a half years. By comparison, naturally occurring types of mollies can live for up to five years if properly cared for. If you'd rather have a longer-living fish, you may be better off keeping a different type of molly.
In addition to color varieties and long fin types, many of the aquarium fish they breed have had the “balloon belly” trait introduced. These balloon belly aquarium fish are essentially deformed fish with slightly humped backs and fatter bodies than normal aquarium fish. In fact, a Florida fish farmer friend of mine said that, in the past, any fish that looked like that was discarded.
‘Balloon Belly’ Fish Exploit Painful Deformities
Balloon Belly Molly | live pet Live Fish | PetSmart
Balloon Belly Molly: Though not a species of it’s own, and although I dislike them personally, I suppose I should include the Balloon Belly Molly. This fish can be created from any of the above species with varying colours, but it always has the distinctive round belly and curved spine that is creating by purposely breeding deformed fish. This fish is a complete hybrid and is manmade. It has a much shorter lifespan and it’s immune system is weakened so it gets sick much easier. Size: 3" 5"The balloon molly fish has a life expectancy similar to those of other types of mollies kept in captivity: three to five years. This life span is based on ideal conditions, such as brackish water or saltwater rather than freshwater, which can make a balloon molly fish susceptible to disease and illness. If this type of molly is kept with other fish, the balloon molly may need special monitoring to stay alive and healthy. The fish's large belly makes him a slow swimmer and feeder, and larger fish may prevent him from getting enough food. There is no information available regarding a balloon fish's life expectancy in the wild, because the variety is a man-made creation -- no such specimens develop in the wild.Balloon Molly. One of my favorite tropical fish. Sadly they are one of the most depressing. Their life spans are usually only a year due to heavy inbreeding. To get that plump belly and arched spine they are selectively bred with mollies that have scoliosis. So they usually die of organ complications. Sad way to die for the name of fish fashion.Some purists in the aquarium hobby/industry consider balloon belly aquarium fish to be an abomination, right up there for condemnation with painted fish and dyed fish. I disagree with this point of view. When someone rants about the awful things they do to fish by breeding “deformed” ones, I simply ask if they think that fancy goldfish are nice. Almost every time they agree that orandas, ranchus, lionheads and other fancy goldfish are lovely fish. I then simply point out that fancy goldfish are really nothing more than balloon belly comets.