Appearance; the cute snake looking thing in your tank
The American Eel is a species of eel that lives in both fresh and salt water, making water changes easier. It has gills and slithers around your fish tank, most are slick and have wedge shaped heads.
They enjoy plants and sometimes burrow into the sand or gravel, they are good escape artists so have an aquarium hood to prevent escaping, they will eat anything Bettas will eat such as blood worms and pellets.
A five gallon aquarium or container
A aquarium hood
Rule of a thumb, feed as much as can fit in the head, often they will swim up to the prey and snap out at it. Then they will drag it under the surface and swallow it.