I think my fish might have passed away or is passing away as I type. He was recently switched from tanks but I don't know what is wrong he immediately wet to the bottom of the tank and started floating around but otherwise he was perfectly healthy before the tank change. The thing is I recently got back from Chicago and I didn't do the water change my little brother did it and I'm afraid my fish went into shock because he wasn't properly acclimated to the temperature change of the new tanks water.
Is there ANYthing I can do right now? I've never had a fish die on me since I was like 11 and now I'm 21 and I have no clue how to tell if he's even dead. Any signs?