New Guinea Rainbowfish Tank Mates & Compatibility

New Guinea Rainbowfish

Melanotaenia affinis

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TemperamentPeaceful (2/10)

Adult Size11.5 cm

Temperature22–28°C

Water TypeFreshwater Only

Swim ZoneMid-level, Surface

StockingSchool of 6+

Stocking calculator

Compatible on paper, but will New Guinea Rainbowfish fit your setup?

Tank mates can still go wrong if the tank is too small, already full, or the water is a poor match. Add New Guinea Rainbowfish to the stocking calculator to check space, stocking pressure, and water needs before you add it.

New Guinea Rainbowfish

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Showing 1 - 24 of 601 Tank Mates

New Guinea Rainbowfish & Abei Puffer

Melanotaenia affinis · Pao abei

Possible with Caution

New Guinea Rainbowfish: PeacefulAbei Puffer: Highly Aggressive

New Guinea Rainbowfish & Achara Catfish

Melanotaenia affinis · Leiarius marmoratus

Possible with Caution

New Guinea Rainbowfish: PeacefulAchara Catfish: Semi-Aggressive

New Guinea Rainbowfish & Adolfo Cory

Melanotaenia affinis · Corydoras adolfoi

Ideal Tank Mates

New Guinea Rainbowfish: PeacefulAdolfo Cory: Peaceful

New Guinea Rainbowfish & Adonis Pleco

Melanotaenia affinis · Acanthicus adonis

Possible with Caution

New Guinea Rainbowfish: PeacefulAdonis Pleco: Aggressive

New Guinea Rainbowfish & Aequidens Jenaro Herrera

Melanotaenia affinis · Aequidens sp. 'Jenaro Herrera'

Possible with Caution

New Guinea Rainbowfish: PeacefulAequidens Jenaro Herrera: Semi-Aggressive

New Guinea Rainbowfish & Aequidens diadema (Diadem Cichlid)

Melanotaenia affinis · Aequidens diadema

Possible with Caution

New Guinea Rainbowfish: PeacefulAequidens diadema (Diadem Cichlid): Semi-Aggressive

New Guinea Rainbowfish & Aequidens sp. Atabapo

Melanotaenia affinis · Aequidens sp. Atabapo

Possible with Caution

New Guinea Rainbowfish: PeacefulAequidens sp. Atabapo: Semi-Aggressive

New Guinea Rainbowfish & Afra Cichlid

Melanotaenia affinis · Cynotilapia afra

Possible with Caution

New Guinea Rainbowfish: PeacefulAfra Cichlid: Aggressive

New Guinea Rainbowfish & African Arowana

Melanotaenia affinis · Heterotis niloticus

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Arowana: Mostly Peaceful

New Guinea Rainbowfish & African Butterfly Cichlid

Melanotaenia affinis · Anomalochromis thomasi

Ideal Tank Mates

New Guinea Rainbowfish: PeacefulAfrican Butterfly Cichlid: Mostly Peaceful

New Guinea Rainbowfish & African Butterfly Fish

Melanotaenia affinis · Pantodon buchholzi

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Butterfly Fish: Semi-Aggressive

New Guinea Rainbowfish & African Clawed Frog

Melanotaenia affinis · Xenopus laevis

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Clawed Frog: Aggressive

New Guinea Rainbowfish & African Dwarf Frog

Melanotaenia affinis · Hymenochirus boettgeri

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Dwarf Frog: Peaceful

New Guinea Rainbowfish & African Jewel Cichlid

Melanotaenia affinis · Hemichromis bimaculatus

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Jewel Cichlid: Aggressive

New Guinea Rainbowfish & African Knifefish

Melanotaenia affinis · Xenomystus nigri

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Knifefish: Semi-Aggressive

New Guinea Rainbowfish & African Lungfish

Melanotaenia affinis · Protopterus annectens

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Lungfish: Highly Aggressive

New Guinea Rainbowfish & African Pike

Melanotaenia affinis · Hepsetus odoe

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Pike: Aggressive

New Guinea Rainbowfish & African Pipefish

Melanotaenia affinis · Enneacampus ansorgii

Possible with Caution

New Guinea Rainbowfish: PeacefulAfrican Pipefish: Peaceful

New Guinea Rainbowfish & Agassiz Cory

Melanotaenia affinis · Corydoras agassizii

Ideal Tank Mates

New Guinea Rainbowfish: PeacefulAgassiz Cory: Peaceful

New Guinea Rainbowfish & Agassiz's Dwarf Cichlid

Melanotaenia affinis · Apistogramma agassizii

Possible with Caution

New Guinea Rainbowfish: PeacefulAgassiz's Dwarf Cichlid: Semi-Aggressive

New Guinea Rainbowfish & Ajamaru Rainbowfish

Melanotaenia affinis · Melanotaenia ajamaruensis

Ideal Tank Mates

New Guinea Rainbowfish: PeacefulAjamaru Rainbowfish: Peaceful

New Guinea Rainbowfish & Allen's Rainbowfish

Melanotaenia affinis · Chilatherina alleni

Ideal Tank Mates

New Guinea Rainbowfish: PeacefulAllen's Rainbowfish: Peaceful

New Guinea Rainbowfish & Alligator Gar

Melanotaenia affinis · Atractosteus spatula

Possible with Caution

New Guinea Rainbowfish: PeacefulAlligator Gar: Aggressive

New Guinea Rainbowfish & Alligator Pleco

Melanotaenia affinis · Pterygoplichthys scrophus

Possible with Caution

New Guinea Rainbowfish: PeacefulAlligator Pleco: Mostly Peaceful