Spotted Blue Eye Rainbowfish

Pseudomugil gertrudae

Spotted Blue Eye Rainbowfish is a peaceful middle swimmer. Keep in a loose group of 8+.

PeacefulMiddle swimmerKeep in a loose group of 8+Beginner – Intermediate

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Explore compatibility, care or problems using this guide and your aquarium’s conditions.

Quick facts

Adult size: ≤ 1.5" (≤ 3.8 cm)
Aquarium size: 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
Care level: Beginner – Intermediate
Temperament: Peaceful
Swimming zone: Middle swimmer
Temperature: 70–82°F (21–28°C)
pH: 4.5–7.5
GH: 5–12 dGH
KH: up to 15 dKH
Diet: Omnivore
Lifespan: up to 5 years
Group behavior: Keep in a loose group of 8+

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 5 years.

Aquarium size and space needs

Minimum aquarium size: 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 21–28 °C, pH 4.5–7.5, GH 5–12 dGH.

Temperament and compatibility

Spotted Blue Eye Rainbowfish is peaceful and suits calm community fish.

Swimming zone and behavior

This fish uses the middle part of the aquarium, so leave enough open swimming space for movement and feeding.

Feeding

As an omnivore, Spotted Blue Eye Rainbowfish should receive a varied diet rather than one repeated food type.

Before adding this fish

Plan for an aquarium of 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length.
Make room for its social group.
Avoid aggressive or highly competitive fish.
Keep in a loose group of 8+.
Offer a varied diet suited to this species’ documented feeding habits.

Natural habitat and origin

Origin: Papua New Guinea Australia.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Aru Rainbowfish Melanotaenia picta Same family Similar care level Same temperament Beginner – Intermediate ≤ 4.3" (≤ 11 cm) 72–79°F (22–26°C) Black Banded Rainbowfish Melanotaenia nigrans Same family Similar care level Same temperament Beginner – Intermediate ≤ 3.9" (≤ 10 cm) 73–82°F (23–28°C) Ajamaru Rainbowfish Melanotaenia ajamaruensis Same family Similar care level Same temperament Beginner – Intermediate ≤ 3.8" (≤ 9.7 cm) 81–86°F (27–30°C) Banded Rainbowfish Melanotaenia trifasciata Same family Similar care level Same temperament Beginner ≤ 5.9" (≤ 15 cm) 80–85°F (26.7–29.4°C) Barred Rainbowfish Chilatherina fasciata Same family Similar care level Same temperament Beginner – Intermediate ≤ 4.3" (≤ 11 cm) 82–90°F (28–32°C) Boesemans Rainbowfish Melanotaenia boesemani Same family Similar care level Same temperament Beginner ≤ 4.3" (≤ 11 cm) 81–86°F (27–30°C)

FAQ

How large does Spotted Blue Eye Rainbowfish get?

Spotted Blue Eye Rainbowfish reaches ≤ 1.5" (≤ 3.8 cm).

What aquarium size does Spotted Blue Eye Rainbowfish need?

Use an aquarium of at least 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length.

Is Spotted Blue Eye Rainbowfish peaceful?

Yes. Spotted Blue Eye Rainbowfish is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.

What temperature is suitable for Spotted Blue Eye Rainbowfish?

Keep it between 21 to 28 °C.

Should Spotted Blue Eye Rainbowfish be kept alone or in a group?

Spotted Blue Eye Rainbowfish: Keep in a loose group of 8+.