It was probably nothing you did. In fish shops they are treated very badly and have bad health. There is nothing to predict what will happen though the staying still sounds like normal fish behavior lolz ;). Hope i helped.
Rap Girl.x
I want to create a cartoon strip but dont have many ideas. They will be 3 boxes long. If you give me ideas i wont copy them i will just get inspiration from them. Thanks.
Oh and by the way, i'll post them on here for you to see when they're done. Thanks.