Goldfish!
About:
It is a fish with freshwater as it habitat of order Cyprinnifomes and belongs to a family Cyprinidae. Thus, one of the fish for the aquarium.
Goldfish are native to East Asia and are one of the Carp Family, the small one. The first bred of this fish was done in Ancient China, thousands of years ago since then many others have come into existence. Their breeds have a variant characteristics in color, size, body, shape, and structure of the fin.
This is the only mammal that could see both infra-red and UV- Lights.
Well, that's incredible because these fish can do that which a human cannot!
Cheers!