I ended up unexpectedly welcoming myself into the discus world today....
mine looks like a mutt of three different kinds, but it looks good.
I hate to jump on your post but I'd just to like to check you know what your getting yourself into.. the use of the word 'unexpectedly' is a bit worrying when it comes to Discus....
I hope you know this but, one discus should not be kept alone, it should not be in a 10 gallon, and your 38 gallon isn't suitable for a group and the fish you already have. General rule is to give each adult Discus 10 gallons each, again this doesn't mean you can keept one in a 10 and 2 in a 20 etc. You should look at keeping 5 as a minimum.
If it really is one inch taller than it is wide then it may develop problems in future or already be stunted, though some are slightly mishapen and can be healthy. It's best to buy round discus though. I hope you know what water requirements they have and that you tried to match the parameters of your supplier.