"Stress bars" is the common name for the dark vertical bands that are seen on numerous cichlids from South America. They are usually only seen under times of stress such as being moved into a new tank, poor water quality, improper temperature range, bothersome tankmates, etc. I figured that it was either recently moved to a new tank or in water that was too warm. Rams that are kept in water that is too cold for them tend to stay at the bottom and be lethargic rather than swimming around like the fish in the pic.