Im pretty new to the african cichlids, i have a fully cycled 29g tank with all readings at perfect levels, just fighting a green water algae bloom at this time. i just recently noticed that my cichlids look like they are shaking in the water, almost like they are shivering, i just wnated to know if this is normal or is it some sign of a disease???? the fish all apear to healthy and eating so i was just curious, thanks 