Aquarium is an alien originally from Ben 10: Ultimatrix Forever.
Aquarium is very similar to Ripjaws. Except his scales are a pale red and he has a more shark-like look. When out of water he has legs and water comes out the gills on his neck. When in water he stores the water and his legs become a shark tail. He doesn't have an antennae like Ripjaws but does hve a spike on his chin. And when it's dark the scales on the back of his hand glow a pale green.
Powers and Abilities
Aquarium can swim faster than any fish on Earth. His teeth can rip through metal up to 4 inches thick. His claws are also extremely powerful.