There are about 20 other families of eels, the moray is the most commonly kept like the Banded Moray, Chainlink Moray, Golden Dwarf Moray Eel, Goldentail Moray, Japanese Dragon Moray, Dragon Moray, Whiteeye Moray, Whiteeye Moray, Whitemouth Moray, Kidako Eel, Yellowmouth Moray, Zebra Moray Eel, Yellow Canary Eel, Tesselata Eel, White Ribbon Eel, along with Blue Ribbon Eel, Black Ribbon Eel just to name a few. Most Eels reach a size between 12 to 36 inches and most species adjust well to life in captivity and are very hardy inhabitants. A larger aquarium with adequate hiding places and a well-sealed lid is required to prevent escape. The majority of the species try to stay concealed during the day. Most eels are nocturnally Eaters and emerge at twilight or at night – time to feed , Eels feed mostly on fish, crustaceans and especially shellfish.