Eliot (PET)

so, you had a pet once, which was an eyefestation, and you decided to name him "Eliot" and you first found him at a facility called "Hadal Blacksite" which holds a crystal in the actual game, you once found a room, which was green glowy, it containted a tank with Eliot, the tank also had green liquid, he does get terrified of you when you first meet him, you found a release button and get him out of the tank, he did infact freak out, but you manage to calm him down, you took him home, fed him, and everything, since he is a fish, he cannot speak, his green eyes can glow, he has a tail, he has a green mouth, his body is DARK green, sensitive, and has 2 fin shaped arms, he can still grip with them, but is horrible with his grip, he can only crawl, his ears do not show but he can hear things, he is like a shark, but doesnt look like a shark, a month later of having him as a pet, he suddenly HATES you now for no reason, and also, since he is a fish, he can breathe underwater and can swim underwater, BUT, he HATES water, he can purr, like a cat, and most of all, he hates you, BUT he actually wanted to do this as a prank to see your reaction, what will you do?