COLD water! American Eels are unique because they are one of the few fish that are catadromous. This means they spend most of their lives in fresh water, but return to the sea to breed.
Mine is in 100% freshwater room tempeture can tolerate alot! Needs frequent water changes. Tank must be sealed well. They are escape artists.
LIFE HISTORY: Adult American eels migrate to the Sargasso Sea, a calm area in the southeast section of the Atlantic Ocean, to spawn and then probably die. After hatching, young eels migrate toward North America and enter freshwater systems to mature. Male eels remain near river mouths or in brackish water, but the females migrate upriver until they run into an impassable object. While in fresh water, eels are secretive and hide in deep pools around cover and then feed during the night. Adult eels primarily eat fish or crayfish, but will feed upon anything they find. Females spend between 5 and 20 years in freshwater.
ADULT SIZE: Male eels grow to about 18 inches, but females can reach up to 52 inches in length.