pseudomugilids

Pseudomugilids are a family of small, freshwater fish found in Australia and New Guinea. They belong to the order Atheriniformes and are characterized by their small size, often less than 5 centimeters in length, and their schooling behavior. These fish typically inhabit slow-moving or still waters, such as ponds, swamps, and the edges of rivers and streams. Their coloration varies widely among species, ranging from drab browns and grays to vibrant blues, yellows, and oranges, often with iridescent markings.

The family Pseudomugilidae includes several genera, with Pseudomugil and Kiunga being the most well-known. Species within these genera exhibit diverse fin arrangements, particularly in the males, which often possess enlarged or elaborately shaped dorsal and anal fins, believed to be used in courtship displays. Their diet primarily consists of small invertebrates and algae. In aquariums, pseudomugilids are appreciated for their active nature and striking colors, though they require specific water conditions and a varied diet to thrive. They are also known for their relatively peaceful disposition, making them suitable for community tanks with other small, non-aggressive fish. Breeding can be achieved in captivity, with females typically laying adhesive eggs on fine-leaved plants.