The average discharge is more than 350 volts, but discharges as high as 650 volts have been measured. Voltage increase until the eel is about three feet long, after which only amperage increases. Some South American eels measure 10 feet in length. Moray eels belong to a family of fish which differs from the common eels by their lack of side fins, their well-developed teeth, and their lack of scales. Common eels have embedded scales, but these are not readily noticeable.
Morays occur in tropical and subtropical seas of the world.
In the United States. Little is known of their breeding habits except that the young pass through a stage which is very thin, ribbonlike, and transparent. Morays feed largely on other fish caught as they work their way through coral reefs. Some morays are equipped with teeth in the back of the mouth for crushing hard-shelled animals such as clams and oysters. Morays are occasionally caught on hook and Morays are occasionally caught on hook and line by fishermen, sometimes are captured by trawlers that drag nets over the bottom.