Purple Rainbow Tails

[Coradion]

it doest look a little like Jazz's blue and yellow tail with the H2O inspired fluke.

I mean kinda, and Mertailor has been known for having similar designs as others but if you look at the fin patterns in the H2O tails they are very similar to those you see in many marine fishes. Just look at some of the acanthuridae and you'll see immediate similarities between the H2O tails and those fishes.