I got Ending 4 & 5.
This is a very serious moving story and well-made. I'm sorry for you what you had to experience. Did anyone ever find out, why the hallucinations were fish and why especially these? I made a playthrough, and unluckily I pronounced the arapaimas wrong, because I've never heard of them before and I didn't know them. A very good game about mental issues. Stay fine and positive.