Betta Fish (Siamese Fighting Fish)
Can live in low-oxygen environments
Bladefin Basslet
The tiny bladefin basslet belongs to the same subfamily as the giant grouper, Epinephelinae.
Flowerhorn Fish
The Flowerhorn fish is an artificial species; it does not exist naturally
Goldfish
Goldfish and common carp can mate and produce offspring
Koi Fish
In Japanese, the word koi sounds like the word for love. So the fish is a symbol of love among other good things.
Loach
Have sharp spines below their eyes
Oscar Fish
The Oscar fish has teeth in its throat!
Peppermint Angelfish
The peppermint angelfish was only first described in 1992.
Wrought Iron Butterflyfish
Is endemic to Japan.