Obviously that "mud cat" is a juvenile but it doesn't look anything close to what we call a mud cat here in Arkansas. I'm not a catfish expert by any means so take that for what it's worth. A mud cat from my experience will be whitesh belly with yellow sides progressing to a black back it will be usually short and very stocky looking excessively wide across the head when mature. That fish in the picture almost looks like a CC with a different pigmentation. Bottom line I don't know what it is but I don't think it's a mud cat.
