Scottkelly,
Yup, yours look identical to mine, except that mine has only 2 long fins. I think he is not a carpenter as he has a swallow like pointed tail. Whereas flavianalis has rounded tail.
Well at least you caught him flashing, I tried taking a few dozens pictures of him just now and none of them turns out sharp, I'll try again tomorrow.
Mine is new too and still a bit skittish right now. I've never seen mine with his fins turn yellow like yours, hopefully it will be soon.