:help: i have a 3 year old large tiger oscar and for the past few days he's been spinning all over the tank, and seems to rubbing his head on things. he's not eating, and his gills are opened really wide. i asked a guy at the store what it could be and he said it was probably gill flukes, but he didn't seem like he was sure. i put him in a quarantine tank after doing a 25% water change and i treated him with copper about 24 hours ago. there's no sign of improvement, minus the fact that he's not spinning as much. the other fish from the main tank seem fine. i really have no idea what this could be and i really don't want to lose this guy. please PLEASE give me some ideas as to what this is and how i could possibly treat it!!! thanks! :help: