i have seven platys but three of them have really big tummies is this normal? one of them looks a bit bloated and overweight they come in all different sizes i dont want to confuse dropsy with a healthy fish they seem o.k could it be constipation?
Are they Male or Female and do you see a black area by the tail? If you do you have fry commin. That is normal and healthy. If you don't you could very well be having some trouble. Rose
if you look on the underside of the platies, you will see that males have like a pointed region and the females dont have this.
The pointed region is used by the males to transport the sperm etc into the female fish. Females are usually larger in the belly region.