[racer1]

One of my cardinals is growing a chin. Anyone know what this could be?

Sorry, hard to get a clear picture.

 

[Tobias]

Fat little fella. Maybe it is a double chin.

 

[Six]

old age would be my guess.

 

[racer1]

Not sure how long they live, but I've only had my cardinals for 8 months, and none of them were adult size.

 

[Six]

With the girth on that fish it looks old. Cards get "fat" when they are up in age.

That fish looks like it's been an adult for a while.

They live a few years in the wild and several in captivity.