1) Poisonous fish 
Takifugu is a genus of pufferfish, often better known by the Japanese name lit. `river pig`. There are 25 species belonging to the genus Takifugu, which can be found worldwide from about 45° latitude north to 45° latitude south, mostly in salt water. Their diet consists mostly of algae, molluscs, invertebrates and sometimes crustaceans. The fi.....