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I would think either the snakehead or the piranha though the piranha only attacks when there is commotion in the water.
The giant freshwater stingray kills more than 2000 people every year, and is definitely one of the most dangerous.
Bull sharks can live in fresh or salt water and have been known to attack people, although in some countries where there is plenty of the sharks natural diet available, attacks are rare.
There is a television series called 'River Monsters' that is fantastic if you are interested in the various (mostly freshwater) species that involve fatalaties.
What else can I help you with?
Can a tropical aquarium be in sunlight?
It is a dangerous thing to place an aquarium in sunlight because the sunlight may overheat the water and kill the fish.
What is the name of a large aquarium fish?
Aquarium fish are often called tropical fish, since most come from areas near or within the tropic zone.
What is the most aggressive aquarium fish?
Snake-heads which are now illegal and that's if your talking about freshwater aquarium.
What are some of the most colorful community freshwater fish that can be kept together in an aquarium?
Some of the most colorful community freshwater fish that can be kept together in an aquarium are neon tetras, guppies, mollies, and dwarf gouramis. These fish come in a variety of vibrant colors and can create a visually appealing display in your aquarium.
When a fish dies in aquarium what to do?
Get a small Aquarium Fish Net, get the body of the Fish, put it in the toilet.
Steal fish on happy aquarium?
no, you cant steal fish in happy aquarium
The most dangerous food?
fish
Can Daphnia live in an aquarium with fish?
No, Daphnia cannot live in an aquarium with fish as they are likely to be eaten by the fish.
Are angelfish dangerous to people?
Angelfish are not dangerous to people. There are freshwater and saltwater angelfish. The freshwater angelfish grow to a size of a few inches, while the saltwater angelfish can grow up to 12-inches.
Can you put a fish you caught in the sea in your house aquarium filled with fresh water?
In most cases, no. The fish will die.
Can you use copper pennies in an aquarium and not harm the fish?
No. The copper pennies will slowly release copper into the water, which will kill most small fish. Avoid having any metal in your aquarium.
What is the most a piranha can weigh?
Piranhas are one of the most aggressive and dangerous fish for an aquarium. Generally, they will beat on each other 'till only one is left. Piranhas in length can be18 inches, and its weight can get to over 5 pounds.
