Betta Fish: My cat, Fig, observing my betta Denim

FIG DOES NOT ENJOY FISHING, but his sister, Fern, does. For that reason, the cats are not allowed in the fish room without supervision.

Also, I am aware that Denim's fins are curled/cramped. He is a new addition as of 1 week ago and his fins were like that when I got him (a big reason why I chose him, actually). I'm hoping with softer water and more room to move about that they will recover.