melanotaenia

Melanotaenia is a genus of freshwater fish commonly known as rainbowfish. These fish are native to Australia and New Guinea. They are characterized by their vibrant, iridescent colors which can vary significantly depending on the species and their environment. Rainbowfish are typically small to medium-sized, with some species reaching up to 15 centimeters in length.

The genus Melanotaenia belongs to the family Melanotaeniidae. They inhabit a variety of freshwater environments, including rivers, streams, lakes, and swamps. Many species are found in clear, flowing waters with abundant aquatic vegetation. Diet varies among species but generally includes small invertebrates, algae, and detritus.

Rainbowfish are popular in the aquarium hobby due to their striking appearance and generally peaceful nature. They are schooling fish and are best kept in groups. Successful breeding in captivity has contributed to their availability for aquarists. Conservation statuses vary for different Melanotaenia species, with some facing threats from habitat degradation and introduced species. Ongoing research aims to understand and protect these unique fish and their ecosystems.