Gertrude's Blue Eye

Gertrude's Blue Eye

Pseudomugil gertrudae

Also known as: Spotted Blue Eye

💧 Freshwater ✌️ Peaceful 🟡 Moderate 🍽️ Omnivore Schooling (6+)

Delicate, tiny fish with iridescent blue eyes and spotted fins. Males have elaborate finnage for their small size.

Tank Size

10 gal
minimum (15+ preferred)

Temperature

73–82°F
23–28°C

pH Range

5.5–7
water acidity

Max Size

1.5"
3.8 cm

Lifespan

2–3 years
typical in captivity

Swim Level

Top
preferred zone

Care Notes

Prefers soft, slightly acidic water. Keep with other gentle species only. Best in a species or nano community tank.

Feeding

Micro foods, baby brine shrimp, and crushed flakes. Tiny mouth requires small food particles.

Compatible Tank Mates

Neon Tetra 1.5" Cardinal Tetra 2" Rummy Nose Tetra 2" Ember Tetra 0.8" Congo Tetra 3.5" Glowlight Tetra 1.5" Harlequin Rasbora 2" Chili Rasbora 0.7" Celestial Pearl Danio 1" Zebra Danio 2" Bloodfin Tetra 2" Lemon Tetra 1.5"

Use Caution With

Black Skirt Tetra 2.5" Serpae Tetra 1.75" Buenos Aires Tetra 3" Silvertip Tetra 2" Colombian Tetra 2.5" Giant Danio 4" Blue Tetra 2.5" Long-Finned Serpae Tetra 1.8" Cockatoo Dwarf Cichlid 3" Firemouth Cichlid 6" Electric Blue Acara 6" Kribensis 4"

Incompatible With

White Cloud Mountain Minnow 1.5" Angelfish 6" Oscar 14" Discus 8" Jack Dempsey 10" Convict Cichlid 5" Green Terror 8" Severum 8" Blood Parrot Cichlid 8" Texas Cichlid 12" Pike Cichlid 10" Salvini Cichlid 8"

Check Compatibility

Want to check if Gertrude's Blue Eye is compatible with a specific fish? Use our compatibility checker to build your complete tank.