Least Killifish (Heterandria) Tank Mates & Compatibility

Least Killifish (Heterandria)

Heterandria formosa

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TemperamentPeaceful (1/10)

Adult Size3.5 cm

Temperature18–27°C

Water TypeBrackish Tolerant

Swim ZoneSurface, Mid-level, Bottom

StockingGroup of 3+

Showing 361 - 384 of 735 Tank Mates

Least Killifish (Heterandria) & Iridescent Shark

Heterandria formosa · Pangasianodon hypophthalmus

Least Killifish (Heterandria) & Jack Dempsey

Heterandria formosa · Rocio octofasciata

Least Killifish (Heterandria) & Jaguar Cichlid

Heterandria formosa · Parachromis managuensis

Least Killifish (Heterandria) & Japanese Ricefish (Medaka)

Heterandria formosa · Oryzias latipes

Possible with Caution

Least Killifish (Heterandria): PeacefulJapanese Ricefish (Medaka): Peaceful

Least Killifish (Heterandria) & Japen Rainbowfish

Heterandria formosa · Melanotaenia japenensis

Possible with Caution

Least Killifish (Heterandria): PeacefulJapen Rainbowfish: Peaceful

Least Killifish (Heterandria) & Julii Corydoras (False Julii)

Heterandria formosa · Corydoras trilineatus

Possible with Caution

Least Killifish (Heterandria): PeacefulJulii Corydoras (False Julii): Peaceful

Least Killifish (Heterandria) & Jurupari Eartheater

Heterandria formosa · Satanoperca jurupari

Possible with Caution

Least Killifish (Heterandria): PeacefulJurupari Eartheater: Mostly Peaceful

Least Killifish (Heterandria) & Kamaka Rainbowfish

Heterandria formosa · Melanotaenia kamaka

Possible with Caution

Least Killifish (Heterandria): PeacefulKamaka Rainbowfish: Peaceful

Least Killifish (Heterandria) & Kenyi Cichlid

Heterandria formosa · Maylandia lombardoi

Possible with Caution

Least Killifish (Heterandria): PeacefulKenyi Cichlid: Highly Aggressive

Least Killifish (Heterandria) & Keyhole Cichlid

Heterandria formosa · Cleithracara maronii

Ideal Tank Mates

Least Killifish (Heterandria): PeacefulKeyhole Cichlid: Peaceful

Least Killifish (Heterandria) & Kissing Gourami

Heterandria formosa · Helostoma temminckii

Possible with Caution

Least Killifish (Heterandria): PeacefulKissing Gourami: Semi-Aggressive

Least Killifish (Heterandria) & Kiunga Blue Eye

Heterandria formosa · Kiunga ballochi

Possible with Caution

Least Killifish (Heterandria): PeacefulKiunga Blue Eye: Peaceful

Least Killifish (Heterandria) & Knight Goby

Heterandria formosa · Stigmatogobius sadanundio

Possible with Caution

Least Killifish (Heterandria): PeacefulKnight Goby: Semi-Aggressive

Least Killifish (Heterandria) & Koi

Heterandria formosa · Cyprinus rubrofuscus

Possible with Caution

Least Killifish (Heterandria): PeacefulKoi: Peaceful

Least Killifish (Heterandria) & Kribensis

Heterandria formosa · Pelvicachromis pulcher

Possible with Caution

Least Killifish (Heterandria): PeacefulKribensis: Semi-Aggressive

Least Killifish (Heterandria) & Kuhli Loach

Heterandria formosa · Pangio kuhlii

Possible with Caution

Least Killifish (Heterandria): PeacefulKuhli Loach: Peaceful

Least Killifish (Heterandria) & Lacerda Cory C015

Heterandria formosa · Scleromystax lacerdai

Possible with Caution

Least Killifish (Heterandria): PeacefulLacerda Cory C015: Peaceful

Least Killifish (Heterandria) & Lake Eacham Rainbowfish

Heterandria formosa · Melanotaenia eachamensis

Possible with Caution

Least Killifish (Heterandria): PeacefulLake Eacham Rainbowfish: Peaceful

Least Killifish (Heterandria) & Lake Mbuta Rainbowfish

Heterandria formosa · Pelangia mbutaensis

Possible with Caution

Least Killifish (Heterandria): PeacefulLake Mbuta Rainbowfish: Peaceful

Least Killifish (Heterandria) & Lake Tebera Rainbowfish

Heterandria formosa · Melanotaenia herbertaxelrodi

Possible with Caution

Least Killifish (Heterandria): PeacefulLake Tebera Rainbowfish: Peaceful

Least Killifish (Heterandria) & Lake Wanam Rainbowfish

Heterandria formosa · Glossolepis wanamensis

Possible with Caution

Least Killifish (Heterandria): PeacefulLake Wanam Rainbowfish: Peaceful

Least Killifish (Heterandria) & Largemouth Bass

Heterandria formosa · Micropterus salmoides

Least Killifish (Heterandria) & Largereye Lampeye Killifish

Heterandria formosa · Micropanchax macrophthalmus

Possible with Caution

Least Killifish (Heterandria): PeacefulLargereye Lampeye Killifish: Peaceful

Least Killifish (Heterandria) & Leggett's Rainbowfish

Heterandria formosa · Glossolepis leggetti

Possible with Caution

Least Killifish (Heterandria): PeacefulLeggett's Rainbowfish: Peaceful