Which fish uses a ‘beard’ to track down its meal?
Barbel (fish) derived from the Latin "barba", meaning beard, a reference to the two pairs of barbels—a longer pair pointing forwards and slightly down positioned—on the side of the mouth. Fish described as barbels by English-speaking people may not be known as barbels in their native country, although the root of the word may be similar. For instance, the Mediterranean barbel ("Barbus meridionalis") is known as "barbeau méridional" or "barbeau truité" in France, but also as "drogan", "durgan", "tourgan", "turquan" and "truitat". "Barbus barbus", the barbel native to Great Britain, is known simply as the barbel and is a popular sport fish.
Fish meal to feed farmed fish, about 20% was used in pig feed, about 12% in poultry feed, and about 12% in other uses, which included fertilizer. The cost of 65% protein fishmeal has varied between around $385 to $554 per ton since 2000, which is about two to three times the price of soybean meal. The rising demand for fish, as people in the developed world turn away from red meat and toward other sources of meat protein, has increased demand for farmed fish, with farmed fish accounting for half the fish consumed worldwide as of 2016. Demand for fish meal