HomeFish encyclopediaRay-finned fishesSilversidesBlue eyesDelicate blue-eye Delicate blue-eye (Pseudomugil tenellus) Scientific name: Pseudomugil tenellus Taylor, 1964 The Delicate blue-eye (Pseudomugil tenellus) is a freshwater fish of the family Pseudomugilidae. In the aquarium it needs water at 25–35°C (77–95°F). Native range: Oceania, Australia and southern Papua New Guinea. Delicate blue-eye care at a glanceTemperature25–35°C (77–95°F) BiologyDorsal spines (total): 3 - 5; Dorsal soft rays (total): 6-7; Anal spines: 0; Anal soft rays: 7 - 10Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudomugil tenellusFamilyPseudomugilidae (Blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length5.5Common length4.0EnvironmentFreshwater; demersalClimateTropicalDistributionOceania: Australia and southern Papua New Guinea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026