FRED MCCONNAUGHEY / SCIENCE PHOTO LIBRARY FRED MCCONNAUGHEY / SCIENCE PHOTO LIBRARY
Sailfin leaffish (Taenianotus triacanthus). This fish, also known as a leaf scorpionfish, inhabits the reefs of the tropical Indo-Pacific region, from eastern Africa to Micronesia. It uses its cryptic colouration to hide itself from its prey, which includes small fish and shrimp, before engulfing it with a sudden gulp when it nears. It has a row of poisonous spines on its back that deter predators from eating it. The sting is extremely painful, but is rarely if ever fatal to humans. This fish may reach a length of around 10 centimetres.
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