This majestic fish can weighed at 300 kg, that is the biggest catfish ever recorded by human at the time. The reason why they can maximizing their growth is because they are natural scavenger. They are not hesitated to eat anything that moves on the river, left over even they are also cannibal. Giant catfish becomes a serious threat to other river habitant because of their scavenger nature. However, they are also struggled from deforestation and commercial fishing involving themselves as the highest catch for the fishermen.

7. Mata Mataiv id="attachment_819" style="width: 810px" class="wp-caption alignnone">Mata Mata

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Mata mata or Chelus fimbriatus is an Amazon river inhabitant. They are likely to hunt small fishes and other small creature. They can grow up to 15 kg. Due to their sensitive nature for water quality, this turtle are now listed as critically endangered from severe water population caused by humans.

8. Snakeheadiv id="attachment_820" style="width: 810px" class="wp-caption alignnone">Snakehead Fish

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These feared fish were the menace of the Maryland river because of their invasive nature. This invasion were so viral through the river and caused a media frenzy. The biologists warned that this invasive fish could conquering North American river and destroying the ecological balance. They can reach in a metre. Their feed on small frogs, invertebrataes and smaller fish, they are also didn’t hesitated to consumed anything that moves. They also can adapt in a mud and the government make a snake fishing competition to depopulate this fish.

9. Electric Eeliv id="attachment_821" style="width: 650px" class="wp-caption alignnone">Electric Eel

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The electric eel have unique intern organs which aid them to produce 500 electrical power beneath their body. Luckily they only use this amount of electricity when they are threatened. They used their electric energy to hunt their prey that consist of fish and small invertebrataes.

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