Transparent Blue Eye Rainbowfish Care Guide
Pseudomugil pellucidus · Freshwater Fish

What Transparent Blue Eye Rainbowfish look like
The Transparent Blue Eye Rainbowfish (Pseudomugil pellucidus) exhibits a diminutive, laterally compressed body that can reach a maximum adult size of approximately 1.5 inches (4 cm). This species is renowned for its almost fully transparent body, which allows for a striking view of its internal structures, complemented by vivid, iridescent blue eyes that create a captivating contrast. Males are distinguished by subtle extensions of their dorsal and anal fins, which are less pronounced in females, showcasing a degree of sexual dimorphism. The fish possesses a well-developed lateral line system, aiding in hydrodynamic sensing, and features a small, terminal mouth equipped with fine, comb-like teeth adapted for grazing on microalgae and small invertebrates. The overall morphology is streamlined, facilitating agile swimming in its natural habitat.
Behavior & temperament
Pseudomugil pellucidus is primarily a social species, often found in small to medium-sized schools, which provides safety in numbers against potential predators. This fish typically inhabits the mid to upper water column in its native freshwater environments, displaying a preference for well-planted areas with ample light. Breeding behavior involves egg scattering, where females release adhesive eggs among aquatic vegetation, ensuring a higher chance of survival for the offspring. The species exhibits a generally peaceful temperament, although males may display territorial behaviors during breeding periods, establishing a loose hierarchy within the school.
Diet & feeding
In the wild, the Transparent Blue Eye Rainbowfish is an omnivore, feeding on a varied diet that includes small invertebrates, zooplankton, and algae. In captivity, it thrives on high-quality flake foods, live or frozen foods such as brine shrimp and daphnia, and should also be provided with spirulina-based supplements to ensure a balanced diet.
Behind the name
Pseudomugil (false mugil); pellucidus (transparent or clear).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Transparent Blue Eye Rainbowfish?
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