This fish basically gives its enemies heroin

Could new drugs be found in its unique venom? Richard Smith/OceanRealmImages A venomous fang blenny, Meiacanthus nigrolineatus swimming in the Red Sea. At first glance, a fang blenny looks completely unthreatening. It’s small, brightly colored, and looks like it would be an adorable backup character in a Finding Nemo film. Then, it opens its mouth. Anthony…