weird

[Jim Jim]

my neon tera eye is growen abnormal its hug 3 times normal it looks bad but he swims and does ever thing else normal whats up????

 

[Oddball~]

It's a disease and probably will die soon.

 

[WinterWind]

It's probably dropsy. Is its scales out at an angle?

 

[Aqualung]

It's a disease and probably will die soon.

That's a bit pessimistic. It sounds like popeye, which can be treated with antibiotics. Here's a helpful link that includes pics, descriptions, and treatments for various diseases including popeye.

http://www.fishpalace.org/Disease.html