Prazeros is a type of small fish that lives in the ocean. It looks like a little silver fish and is sometimes called a "bait fish" because bigger fish like to eat it.
People might talk about prazeros because they are important to certain aspects of the fishing industry. Fishermen might use prazeros to catch bigger fish or they might use them as bait.
Overall, prazeros are just a small but important part of the ecosystem of the ocean.