Rays are underwater animals. The Yellow Ray is yellow in color.
As of current, you are unable to feed the rays, and they drop 1 Raw Fish when killed.
Rays are hostile, especially when you step on them. They have the ability to dig into the bottom of the lakes, making them almost invisible:
Yellow Rays are found in sandy lakes
Rays can be hunted for fish, so they are a food source. The only downside is that they are hard to see when the dig into the lake beds.
NOTE: For Brown Ray, click HERE.