The Murray river rainbowfish has easily got to be one of the most under-rated Melanotaenia species in the aquarium trade. Whilst there may be far more colourful species, the hardiness, size, and versatility of these fish are completely unparalleled. These are one of the only true cold-water rainbowfish species that can even be kept outdoors in ponds through winter with no issues at all. They will make for a fantastic entry-level rainbowfish species or even a great Coldwater aquarium species that can easily pass off as tropical fish.
