Pseudomugilidae

Pseudomugilidae is a family of small, freshwater ray-finned fish native to Australia and New Guinea. These fish are commonly known as blue-eyes or rainbowfish, although the latter term is also used for the larger Melanotaeniidae family. Pseudomugilids are characterized by their small size, typically reaching only a few centimeters in length, and their distinctively colored irises, which are often blue or yellow, giving them their common name. They possess two dorsal fins, and their pectoral fins are often located high on their bodies.

The family Pseudomugilidae includes several genera and numerous species, with *Pseudomugil* being the most well-known. They inhabit a variety of freshwater environments, including streams, rivers, lakes, and swamps, often preferring slow-moving or still waters with abundant aquatic vegetation. Their diet consists primarily of small invertebrates and algae. Many species are popular in the aquarium trade due to their attractive coloration and peaceful nature. Breeding in captivity is often achieved by providing suitable spawning materials, such as spawning mops or fine-leaved plants. Conservation status varies among species, with some considered vulnerable or endangered due to habitat loss and introduced species.