Fishtail Palms need very bright indirect light from an east or west-facing window. Avoid direct exposure to the sun.
Water a Fishtail Palm well and then allow the top 25% of the soil to dry out before watering again. Never allow the soil to totally dry out or permit a Fishtail Palm to sit in excess water. Leaf edges turn brown if there are too many chemicals in the water. If this is the case, use distilled water.