Least Killifish (Heterandria) & Bloodfin Tetra
Heterandria formosa · Aphyocharax anisitsi
Least Killifish (Heterandria): PeacefulBloodfin Tetra: Peaceful
Back to all fishesView full care guide
Least Killifish (Heterandria) Tank Mates & Compatibility
Least Killifish (Heterandria)
Heterandria formosa
TemperamentPeaceful (1/10)
Adult Size3.5 cm
Temperature18–27°C
Water TypeBrackish Tolerant
Swim ZoneSurface, Mid-level, Bottom
StockingGroup of 3+
Showing 121 - 144 of 735 Tank Mates
Possible with Caution
Least Killifish (Heterandria) & Blue Acara
Heterandria formosa · Andinoacara pulcher
Least Killifish (Heterandria): PeacefulBlue Acara: Semi-Aggressive
Least Killifish (Heterandria) & Blue Back Blue Eye
Heterandria formosa · Pseudomugil cyanodorsalis
Least Killifish (Heterandria): PeacefulBlue Back Blue Eye: Peaceful
Least Killifish (Heterandria) & Blue Botia
Heterandria formosa · Yasuhikotakia modesta
Least Killifish (Heterandria): PeacefulBlue Botia: Semi-Aggressive
Least Killifish (Heterandria) & Blue Dolphin (Hap)
Heterandria formosa · Cyrtocara moorii
Least Killifish (Heterandria): PeacefulBlue Dolphin (Hap): Semi-Aggressive
Least Killifish (Heterandria) & Blue Emperor Tetra
Heterandria formosa · Inpaichthys kerri
Least Killifish (Heterandria): PeacefulBlue Emperor Tetra: Peaceful
Least Killifish (Heterandria) & Blue Pearl Shrimp
Heterandria formosa · Neocaridina zhangjiajiensis
Least Killifish (Heterandria): PeacefulBlue Pearl Shrimp: Peaceful
Least Killifish (Heterandria) & Blue Point Cichlid
Heterandria formosa · Andinoacara coeruleopunctatus
Least Killifish (Heterandria): PeacefulBlue Point Cichlid: Semi-Aggressive
Least Killifish (Heterandria) & Blue Rainbowfish
Heterandria formosa · Melanotaenia caerulea
Least Killifish (Heterandria): PeacefulBlue Rainbowfish: Peaceful
Least Killifish (Heterandria) & Blue Sifter
Heterandria formosa · Cribroheros robertsoni
Least Killifish (Heterandria): PeacefulBlue Sifter: Semi-Aggressive
Least Killifish (Heterandria) & Blue Tetra
Heterandria formosa · Knodus borki
Least Killifish (Heterandria): PeacefulBlue Tetra: Semi-Aggressive
Least Killifish (Heterandria) & Blue Tilapia
Heterandria formosa · Oreochromis aureus
Least Killifish (Heterandria): PeacefulBlue Tilapia: Semi-Aggressive
Least Killifish (Heterandria) & Bluegill Sunfish
Heterandria formosa · Lepomis macrochirus
Least Killifish (Heterandria): PeacefulBluegill Sunfish: Aggressive
Least Killifish (Heterandria) & Boeseman's Rainbowfish
Heterandria formosa · Melanotaenia boesemani
Least Killifish (Heterandria): PeacefulBoeseman's Rainbowfish: Peaceful
Least Killifish (Heterandria) & Bolivian Ram
Heterandria formosa · Mikrogeophagus altispinosus
Least Killifish (Heterandria): PeacefulBolivian Ram: Mostly Peaceful
Least Killifish (Heterandria) & Brevis Shelldweller
Heterandria formosa · Neolamprologus brevis
Least Killifish (Heterandria): PeacefulBrevis Shelldweller: Semi-Aggressive
Least Killifish (Heterandria) & Brilliant Rasbora
Heterandria formosa · Rasbora einthovenii
Least Killifish (Heterandria): PeacefulBrilliant Rasbora: Peaceful
Least Killifish (Heterandria) & Brilliant Rummy-Nose Tetra
Heterandria formosa · Hemigrammus bleheri
Least Killifish (Heterandria): PeacefulBrilliant Rummy-Nose Tetra: Peaceful
Least Killifish (Heterandria) & Bristlenose Pleco
Heterandria formosa · Ancistrus cf. cirrhosus
Least Killifish (Heterandria): PeacefulBristlenose Pleco: Peaceful
Least Killifish (Heterandria) & Bronze Corydoras
Heterandria formosa · Corydoras aeneus
Least Killifish (Heterandria): PeacefulBronze Corydoras: Peaceful
Least Killifish (Heterandria) & Brown Bullhead Catfish
Heterandria formosa · Ameiurus nebulosus
Least Killifish (Heterandria): PeacefulBrown Bullhead Catfish: Semi-Aggressive
Least Killifish (Heterandria) & Brown Camo Shrimp
Heterandria formosa · Caridina babaulti var. Brown
Least Killifish (Heterandria): PeacefulBrown Camo Shrimp: Peaceful
Least Killifish (Heterandria) & Brown Hoplo Catfish
Heterandria formosa · Hoplosternum littorale
Least Killifish (Heterandria): PeacefulBrown Hoplo Catfish: Peaceful
Least Killifish (Heterandria) & Brown Puffer
Heterandria formosa · Pao turgidus
Least Killifish (Heterandria): PeacefulBrown Puffer: Highly Aggressive