Named for the electrical charge it releases to stun its prey and enemies, the electric eel can generate up to 800 volts of electricity, enough to kill an adult human.
As one of the world's largest freshwater fish, this stingray can weigh up to 600kg.
Come meet Singapore's resident giant pandas, Kai Kai and Jia Jia!
This largest of all otters can grow to a standing height of 1.8m and take down small caimans.
The tigerfish is the largest member of the tigerfish clan, a fierce predator with daggerlike teeth.
A narrow snout, attended by an array of fearsome teeth, helps the gharial catch its fish.
Manatees and their dugong cousins are the only aquatic mammals to feed solely on plants.
Growing up to 3.2m long with a weight of almost 300kg, this large fellow is one of the world's largest freshwater fish.
The red panda's fiery red coat is no doubt why its name in Chinese literally means 'fire fox'.