One of my biggest pet peeves: mermaids with knees. I mean... what the fuck. Fish don't have knees. The only exception is elbow squid and that isn't even a fish: http://youtu.be/aJV5mH3YY70
I also have nothing but disapproval for mermaids with hips. The tail of a fish aren't legs, it is its goddamn torso.
Anyway, this guy is inspired by barracudas.