Hey! So, sorry that The Aquarium is kinda glitched out right now. I would appreciate some assistance in revealing who is who. There should be a puzzle when you enter each enclosure and maybe I can find some facts that can help you figure it out. If you are feeling stuck, refer to this certified un-glitching guide I made myself. Once you figure out the four animals, you should be able to recover the code for the next steps to restore The Aquarium.