fat neon - grossly distended bellies help!

hi
have 2 neons who for the past 6 weeks or so have been very fat. at first thought they were going to spawn but has not happened & they are huge!!!! they eat & swim around as normal but definitely do not look normal their bellies are very distended. all tank params normal (0 ammonia 0 nitrite, 20 nitrate pH7.9 always have this ph & nitrate) no other symptoms visible.
does anyone have a clue as to whats causing this???
ive attatched one pic here & another in my 2nd post showing the neon from behind to show how big they have got.
any help most appreciated.

this is the 2nd pic showing one of my podgy neons from the back!!!

It could be dropsy do the scales look as if they are stickin out? failing this it may be an internal infection.

no - no scales sticking out, they just dont look like classic dropsy.what would you do for internal infection???

Have you got a hospital tank? you'll need to treat him separetly with a product made by Interpet called anti-interal bacteria hope this helps.

i know how u feel. i have mollies that look like this. one has scales sticking out because i think he is so distended. my fish too, i thought were overeating. i treated them for dropsy, one got better now tonight i noiticed he is very very bloated and not eating. i think he is going to die. im very upset cause i think all this business with my fish were caused by intestinal parasites.

i am treating with pepso food and tank buddies from jungle for parasites. my fish are pooping long stringy ghost white stool.

my other male fish is eating up a storm and swimming around despite being so bloated and off balance.

my readings are also within normal limits.

good luck to you.