The Croaking Gourami will easily be one of the weirdest fish you will keep purely because you might get confused that there’s a frog in your aquarium. As their name suggests these fish croak and it's surprisingly loud and audible even when you are a few meters away. This awesome behavior is a part of how these fish interact with each other but aside from that, they are a small, easy to care for, and totally stunning species in their own regard. These fish only reach around 7 cm and will be perfect for a small, easy-to-maintain desktop aquarium or as part of a larger peaceful community system.