Hey, maybe someone will be able to help me with a problem i'm having:
This morning, as I was eating breakfast, I noticed that all of my fish were breathing really hard. My catfish was swimming at the top of the tank, gasping for air. The filter is working fine (no different than in the past, and everything has been fine). This afternoon, when I came back from work, my catfish had passed away. Beside the fact that i'm ultra bummed, i'm intensely worried about my oscar and JD. They are both still gasping. What should I do? What is going on? Are my fish going to be ok?!?!?! Thanks in advance for any help you can give to me and my fish!



