What are you feeding the bass?
I have about 400 guppies and molly fry, so I scooped about 5 doz 1" fish into the Oscar tank. That's keeping him busy.
He did eat one mealworm this AM, but he's not really hungry lately . . .
what’s your temp at? Any other tank mates that compete for food?
The breeding tanks run about 78F while the Oscar tank runs about 77F.
No tankmates, Felix The Oscar has been living alone for almost 2 years. Today I dumped another 50+ fry of various sizes into his 75g. All under 1" long.