The Rainbow Goodeid goes by the scientific name Characodon lateralis. “Latus” is a latin term referring to the patterns decorating the bodies of this species along the lateral line. These fish are endemic to the state of Durango in Mexico, but may be extinct in the wild. For this reason, and because these fish are notoriously difficult to keep in the home aquarium, Rainbow Goodeids are not commonly available in the aquarium hobby. When they are available, they are typically very expensive.