Just as I start to prepare for a 180 one of my 4 year old Red Hooks in my 75 is acting funny. 
He was fine yesterday but today I noticed that he is having a hard time staying afloat. His body is angled slightly upward and it seems as though if he stops swimming he sinks. He also seems like he's swollen, almost like he ate to much.
He has been in the same tank with the same tankmates for about four years. The four Red Hooks were the last new fish to go in so I know that there can be no parasite from another fish.
Is it possible that he just "gorged" himself?? Or do I need to worry??
Im hoping he's OK so I can enjoy all four of the Red Hooks in the 180.
Any help is appreciated, thanks a bunch.
He was fine yesterday but today I noticed that he is having a hard time staying afloat. His body is angled slightly upward and it seems as though if he stops swimming he sinks. He also seems like he's swollen, almost like he ate to much.
He has been in the same tank with the same tankmates for about four years. The four Red Hooks were the last new fish to go in so I know that there can be no parasite from another fish.
Is it possible that he just "gorged" himself?? Or do I need to worry??
Im hoping he's OK so I can enjoy all four of the Red Hooks in the 180.
Any help is appreciated, thanks a bunch.