Complex sentence: Barbels are benthopelagic, meaning they are found at the bottom of rivers as well as in open water, they are typically found feeding in deeper areas of rivers with a stoney or gravel bottom.
Split into simpler sentences: Barbels are benthopelagic, meaning they are found at the bottom of rivers as well as in open water. They are typically found feeding in deeper areas of rivers with a rocky or gravel bottom.