Prohibited fishing system, which applies a plant crushed in water currents, which drugs and kills fish. The plant also receives the name of barbasco, but it also receives the names of Kube, cubé, haiari, conapi, pacal, kumu. Belongs to the Fabaceae family and its scientific name is Lonchocarpus urucu or Lonchocarpus utilis (are two different species but very similar properties), are piscicides (kill fish). They contain two lethal substances to the aquatic environment the rotenone and the deguelina. The study of these substances helped discover sterols similar to progesterone and the bases of the contraceptive pill.
