Australian Rainbowfish

Australian Rainbowfish

Melanotaenia splendida

Also known as: Eastern Rainbowfish

💧 Freshwater ✌️ Peaceful 🟢 Easy 🍽️ Omnivore Schooling (6+)

Highly variable species with many regional color forms. Males can show brilliant blues, greens, yellows, and reds.

Tank Size

30 gal
minimum (55+ preferred)

Temperature

72–82°F
22–28°C

pH Range

6.5–8
water acidity

Max Size

5"
12.7 cm

Lifespan

5–8 years
typical in captivity

Swim Level

Middle
preferred zone

Care Notes

Very hardy and adaptable. Tolerates a wide range of water conditions. Active swimmer needing a long tank.

Feeding

Flakes, pellets, and frozen foods. Not a fussy eater.

Compatible Tank Mates

Cardinal Tetra 2" Rummy Nose Tetra 2" Congo Tetra 3.5" Harlequin Rasbora 2" Zebra Danio 2" Bloodfin Tetra 2" Diamond Tetra 2.5" Scissortail Rasbora 3.5" X-Ray Tetra 1.75" Emperor Tetra 2" Penguin Tetra 2.5" Red Eye Tetra 2.5"

Use Caution With

Neon Tetra 1.5" Black Skirt Tetra 2.5" Serpae Tetra 1.75" Glowlight Tetra 1.5" Celestial Pearl Danio 1" Lemon Tetra 1.5" Black Neon Tetra 1.5" Buenos Aires Tetra 3" Green Neon Tetra 1" Flame Tetra 1.5" Silvertip Tetra 2" Red Phantom Tetra 1.5"

Incompatible With

Ember Tetra 0.8" Chili Rasbora 0.7" White Cloud Mountain Minnow 1.5" Phoenix Rasbora 0.8" Exclamation Point Rasbora 0.7" Kubotai Rasbora 0.8" Ruby Tetra 0.7" Wild-Type Ember Tetra 0.8" Oscar 14" Jack Dempsey 10" Convict Cichlid 5" Green Terror 8"

Check Compatibility

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