Venomous fish
Fish that inject venom through spines or teeth, such as stonefish, lionfish, stingrays and some catfish.
Also: venom
More than 1,200 fish species are thought to be venomous, more than all venomous snakes together, and later estimates run higher still. Most use venom for defence, delivered through fin spines when stepped on or handled. The reef stonefish is the most venomous fish known; its sting is very painful and can be dangerous. Lionfish, scorpionfish, stingrays, weeverfish and rabbitfish sting too. In South Asia, the stinging catfish, singhi, and some marine catfish can give painful wounds from their pectoral spines. Hot water often eases the pain, but serious stings need medical help.