AHHH!! I REALLY NEED HELP!
I wasn't really paying close attention to my fish the past few days because I've been really busy. But today I had some free time after Christmas dinner so I went over to look at my fish. I didn't see him at first so I turned on the filter (he likes playing with it. i know its not good though). he was sucked straight out but he wasn't swimming away this time. i turned the light on brighter and noticed he lost his color and wasn't moving at all! i looked closer and he was still breathing. there were also spots on the end of his fins and tail that looked like blood. i called my friend that had given him to me and she asked if he was hiding in a corner and yes, he was. he was behind the female's "cup". i have her against the tank with some room between her cup and corner. so i guess he was hiding there. she said that he had something called dammonia. but i think i heard wrong because she didn't have good reception. so please, PLEASE help me!!