Koi is a special Bunny besides already being part skunk and being a bunny. He's also gifted with the ability of transformation or shapeshifting. His flames, tummy dots and star marking on his.......*blush* rear are symbols that always appear regardless of his transformation.
.......
*Grab the mic* Look everyone this is koi speaking now >,< Ummm I'm a shapeshifter and I wanted to go swimming so I transformed into my otter form. I can change into only a few species as long as there in close relation to me (example blood, same species family and crap or a good friend and physical contact) *blush* either way I'm a bunny/skunk but I'll go as a bunny most of the time. Either way enjoy my otter form you sillys
________________________________________
Anyway....this picture is a introduction to koi's otter form just like my sona's real introduction http://www.furaffinity.net/view/9010697/ <- here. I wanted to show that his flame changes color depending on the transformation