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 217 - 240 of 735 Tank Mates

Least Killifish (Heterandria) & Deep Water Hap (Placidochromis electra)

Heterandria formosa · Placidochromis electra

Possible with Caution

Least Killifish (Heterandria): PeacefulDeep Water Hap (Placidochromis electra): Semi-Aggressive

Least Killifish (Heterandria) & Delhezi Bichir (Armored Bichir)

Heterandria formosa · Polypterus delhezi

Least Killifish (Heterandria) & Delicate Blue-Eye

Heterandria formosa · Pseudomugil tenellus

Possible with Caution

Least Killifish (Heterandria): PeacefulDelicate Blue-Eye: Peaceful

Least Killifish (Heterandria) & Demasoni Cichlid (Mbuna)

Heterandria formosa · Chindongo demasoni

Possible with Caution

Least Killifish (Heterandria): PeacefulDemasoni Cichlid (Mbuna): Highly Aggressive

Least Killifish (Heterandria) & Denison Barb (Roseline Shark)

Heterandria formosa · Sahyadria denisonii

Possible with Caution

Least Killifish (Heterandria): PeacefulDenison Barb (Roseline Shark): Mostly Peaceful

Least Killifish (Heterandria) & Diamond Tetra

Heterandria formosa · Moenkhausia pittieri

Possible with Caution

Least Killifish (Heterandria): PeacefulDiamond Tetra: Peaceful

Least Killifish (Heterandria) & Dickfeld's Julie

Heterandria formosa · Julidochromis dickfeldi

Possible with Caution

Least Killifish (Heterandria): PeacefulDickfeld's Julie: Semi-Aggressive

Least Killifish (Heterandria) & Discus

Heterandria formosa · Symphysodon aequifasciatus

Least Killifish (Heterandria) & Dojo Loach (Weather Loach)

Heterandria formosa · Misgurnus anguillicaudatus

Possible with Caution

Least Killifish (Heterandria): PeacefulDojo Loach (Weather Loach): Peaceful

Least Killifish (Heterandria) & Domino Synodontis

Heterandria formosa · Synodontis notatus

Least Killifish (Heterandria) & Dourada

Heterandria formosa · Brachyplatystoma rousseauxii

Least Killifish (Heterandria) & Duboisi Cichlid (Tropheus)

Heterandria formosa · Tropheus duboisi

Possible with Caution

Least Killifish (Heterandria): PeacefulDuboisi Cichlid (Tropheus): Aggressive

Least Killifish (Heterandria) & Duplicareus Corydoras

Heterandria formosa · Corydoras duplicareus

Possible with Caution

Least Killifish (Heterandria): PeacefulDuplicareus Corydoras: Peaceful

Least Killifish (Heterandria) & Dusky Millions Fish

Heterandria formosa · Phalloceros caudimaculatus

Possible with Caution

Least Killifish (Heterandria): PeacefulDusky Millions Fish: Peaceful

Least Killifish (Heterandria) & Dwarf Chain Loach

Heterandria formosa · Ambastaia sidthimunki

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Chain Loach: Peaceful

Least Killifish (Heterandria) & Dwarf Cory (Tailspot Cory)

Heterandria formosa · Corydoras hastatus

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Cory (Tailspot Cory): Peaceful

Least Killifish (Heterandria) & Dwarf Flag Cichlid

Heterandria formosa · Laetacara curviceps

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Flag Cichlid: Mostly Peaceful

Least Killifish (Heterandria) & Dwarf Gourami

Heterandria formosa · Trichogaster lalius

Possible with Caution

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

Least Killifish (Heterandria) & Dwarf Green Pike Cichlid

Heterandria formosa · Crenicichla compressiceps

Least Killifish (Heterandria) & Dwarf Molly

Heterandria formosa · Poecilia chica

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Molly: Mostly Peaceful

Least Killifish (Heterandria) & Dwarf Neon Rainbowfish (Praecox)

Heterandria formosa · Melanotaenia praecox

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Neon Rainbowfish (Praecox): Peaceful

Least Killifish (Heterandria) & Dwarf Pea Puffer

Heterandria formosa · Carinotetraodon travancoricus

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Pea Puffer: Aggressive

Least Killifish (Heterandria) & Dwarf Pencilfish

Heterandria formosa · Nannostomus marginatus

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Pencilfish: Peaceful

Least Killifish (Heterandria) & Dwarf Petricola

Heterandria formosa · Synodontis lucipinnis

Possible with Caution

Least Killifish (Heterandria): PeacefulDwarf Petricola: Peaceful