I would think not an Atlantic sharpnose-Rhizoprionodon terraenovae obviously it does not look much like it but I'll throw it out there just for the fun of it because its in your avatar pic lol.
Oh oh I got it finetooth-carcharinus isodon
Um - Nope -it's certainly Not an Atlantic Sharpnose - That would have been too easy - since like you said - it's my avatar. And it's Not a Finetooth - but your getting warmer.
Btw 3rd and final clue - there's are only 4 species that are usually list as small coastal species By the US Dept. of Marine Fisheries.