No as far as i know he is fine hes eating well and he does swim right just it seems he prefers to swim like that and rest like that wen hes not moving but no hes fine.
I wouldnt see how he was ill nothing in there chases or bothers him he does awim upright sometimes he is a very enthusiastic eater and ive had him for a while now so???? You tell me.
He is very soft doesnt eat even tiny fish i just think hes a nervous fish, maybe its something to do with the natural looking setup i have.
I dont think he is blind in one eye they look fine not misty at all