Anyway, here are my questions:
1. Do you think Flippy is, indeed, a male? I made the judgment based on his plastron being slightly concave and the length of his nails, but it’s somewhat hard for me to determine if his clocal opening is near the base of his tail or further down because obviously he doesn’t really want me touching his tail to get a better look.
2. How old do you think he is? I got him in June and I would think he was a hatchling, so I think he’s around 7 months. I know it’s very hard to judge based on a photo, but I’ve included a picture below that is a side-by-side of me holding him 2 days after I bought him and me holding him a couple of weeks ago.
3. Do his carapace and plastron look okay? This is my biggest concern after reading about all of the health issues, because he has white lines between scutes. The logical part of me thinks that’s just a normal result of being submerged, similar to how calcium ends up in deposits on the tank from the water splashing around. Two very small translucent flakes came off when I was holding him the other day. It’s the picture where he has a washcloth around him – I always let him “shower” in the sink before letting him crawl around so that he’s not getting aquarium water everywhere . He’s in a washcloth because I was just patting off the excess aquarium water before letting him hang out under the faucet, which he loves.
4. Finally, based on what limited information you can gather from the pictures, does he seem to be in good shape? I would ask if he seems “happy” and healthy, but his markings make his face look like he’s always unamused or indifferent, which makes me laugh. Only the cats could rival his level of detachment. The only time he seems truly pleased is when he stretches out his head so I can gently rub his neck.
Thank you so much for any responses. I look forward to many discussions on the forum, now that I’m done lurking.
Here's a side-by-side of Flippy in June, and now, that might possibly help in determining his rough age:

A close-up of his carapace:

And a closeup of his head/carapace/plastron, in which you can see the white "lines" between scutes that I worry over:

And a couple of "body" shots, or at least, the best I could do since he obviously isn't a big fan of just being still:







