heavy breathing

I’ve had this far for about 5 months now he’s been eating like a champ shrimp and feeder fish then all of a sudden about a week ago he stopped eating. His belly got these red lines and he’s keeping his mouth open all the time. I’m worried I might loose him if he doesn’t start eating soon. Can...

Hi everyone, I have noticed my fire eel has not been eating and now it has been gasping or breathing heavily. I did a 50% water change just now, tests show 0 ammonia, nitrites, nitrates, pH 7. Tank has sandy bottom and PVC pipes and decorations for hiding. It came out of its preferred PVC pipe...

Guys I need help very urgently , I added be to my arowana tank and he is breathing way heavy his ribs are poke out not moving much not eating at all I am freaked out don't know what to do this my first ray and experience going way bad my water parameters are up to mark he is holding his body...

Hey guys. I've just moved my 2 years old Asian Aro to his new tank 2 days ago. He's been having problem with heavy breathing since. His new tank has these dimensions 72in x 24in x 16in. The tank is only 16in Height so it is not deep. I don't think the water level is high to cause heavy...