In my opinion it is
the bull shark. There are many species of dangerous fish in all area's of the world.
The piranha is one of the most vicious and dangerous fish in the world. Found in South America, these sharp-toothed carnivorous fish are known for their aggressive nature and powerful bite that can strip prey to the bone in a matter of minutes.
If you mean salt-water then the Great White Shark, although it's a world wide species. If you mean fresh-water: Pikes, Gars, and Muskies although I haven't heard of them really bothering anybody. They are no where near as dangerous as the Pirannahs of South America.
The most dangerous fish in the world is the great white shark. it has very sharp teeth to grind its food. It its so much and never gets stuffed.
No one is really sure which is the second most vicious animal. It all depends on the animal and it's attitude.
The box jellyfish is considered one of the most dangerous sea animals in the world. Its venom can be deadly to humans and can cause cardiac arrest and respiratory failure. Other dangerous sea creatures include the saltwater crocodile, great white shark, and cone snail.
the most dangerous type of lava is sticky lava because slow moving acid lava is more vicious
the mongrel koi is the most dangerous goldfish in the world acually to phrase that better its the mongrel koi is the deadliest goldfish in the world well lol there you go mongrel koi is the most dangerous goldfish.
fish
fish in the artic lowlands are one of the most dangerous fish in the world. they originated form San Lorenzo Guatemala. They Hurt children and will hurt you!
The most dangerous war in the world is the Vietnam War.
jelly fishes
probably surströmming