Oscar acting weird

Oregon Cichlid

Feeder Fish
MFK Member
Jan 10, 2015
12
0
1
United States
Hello,
I have a 4 year old oscar that lives in a 150 gallon tank with a female flowerhorn and a plecostamus. For the last couple of days he has been hanging out in the bottom corner in my tank and not moving much, he is also grayer than normal and today has started twitching. He still responds when I walk over to the tank and still comes up for food. I need help trying to figure out what is going on with him and what the treatment might be.
Thanks
 
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