Context: Sturgeons eat invertebrates, plants, and small fish. They are bottom feeders. Bottom feeders find their food at the bottom of rivers, lakes, and the ocean.
The 's mouth is located on the underside of its head and points downward. Its mouth is adapted for bottom feeding.
Figure: sturgeon.
Which animal's mouth is also adapted for bottom feeding?
A. spotted eagle ray
B. discus
Pick the correct answer from the listed options and provide the letter of the selected option.

A