Spotted Blue-Eye

• ExerciseModerate

  An active swimmer that appreciates open swimming space.

• GroomingAttentive tank care

  Sensitive to water quality — stay on top of testing and maintenance.

• Living spaceNano-tank friendly

  Happy in a small, stable, well-filtered tank.

• Owner experienceSome experience helps

  A little know-how makes life smoother.

• Commitment2–3 years

  Plan for a long, loving relationship.

Health to watch: Ich (white spot) · Fin rot · Skin conditions

The Spotted Blue-Eye (Pseudomugil gertrudae) comes from swamps, lagoons and slow blackwater creeks in northern Australia and southern New Guinea and reaches only about 3 to 3.5 cm. It is nearly transparent gold with rows of black spots across the fins and body, and the bright blue eye that names the genus. Males display with fins fully erected, particularly in morning light. A group of ten or more suits a planted tank from 40 litres at 24-30C with a pH of 5.5 to 7.5 and soft, often tannin-stained water, gentle flow and a covered top. Feed micro-foods only: powdered fry food, live baby brine, microworms, cyclops and finely crushed flake, offered two or three times daily. It is a genuinely delicate species with a natural lifespan of only two to three years, so it needs stable, warm, clean water and quiet tankmates. It is best kept in a dedicated nano tank or with shrimp, where nothing outcompetes it for food.

• How active is a Spotted Blue-Eye?

  Moderate. An active swimmer that appreciates open swimming space.

• How much maintenance does a Spotted Blue-Eye need?

  Attentive tank care. Sensitive to water quality — stay on top of testing and maintenance.

• What tank size does a Spotted Blue-Eye need?

  Nano-tank friendly. Happy in a small, stable, well-filtered tank.

• Is a Spotted Blue-Eye a good fit for first-time owners?

  Some experience helps. A little know-how makes life smoother.

• How long do Spotted Blue-Eye live?

  2–3 years. Plan for a long, loving relationship.

• What health issues affect the Spotted Blue-Eye?

  Keep an eye out for Ich (white spot), Fin rot, Skin conditions. These are worth raising with your vet, along with any screening they recommend.

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