Pseudomugil gertrudae

Common name: Gertrude’s Rainbowfish, Small Blue-Eye

Origin: Northern Australia and Papua New Guinea (found in freshwater rivers, streams, and coastal lagoons)

Optimal living conditions:

• Temperature: 22 - 28 °C
• pH: 6.5 - 7.5
• Aquarium size: 60 liters+ (larger tanks with plenty of swimming space are ideal)

Adult fish size: 3 - 4 cm

Diet: Pseudomugil gertrudae is an omnivorous species, feeding on a mix of small invertebrates, plant matter, and algae in the wild. In the aquarium, they thrive on a varied diet of high-quality flake or pellet food, along with occasional live or frozen foods such as brine shrimp, daphnia, and micro worms. Supplementing their diet with some plant-based foods, like spirulina or finely chopped vegetables, will help maintain their health and vibrant coloration.

Tankmates: Pseudomugil gertrudae is a peaceful and social species that thrives in schools. It’s best to keep them in groups of at least 6 to 8 individuals, as they are naturally active and feel secure in numbers. They are compatible with other peaceful community fish, such as small tetras, rasboras, and other small rainbowfish. Avoid keeping them with aggressive or larger species that may intimidate them. A well-planted tank with open swimming areas and gentle filtration is perfect for this species.

Note: Pseudomugil gertrudae is known for its stunning appearance, with a beautiful blue eye and a delicate, iridescent body. These small fish are very active swimmers, spending most of their time in the middle to upper levels of the aquarium. They thrive in stable water conditions, and providing them with a well-planted environment with gentle currents mimicking their natural habitat will help them flourish. They also appreciate having some areas to hide, so including rocks or plants is beneficial. These rainbowfish are best kept in peaceful community tanks where they can interact with their schoolmates and feel secure.

Note: This small chart is only the basics and is not enough for you to decide if this fish is right for you! Do your own detailed research before buying!!