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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 241 - 264 of 735 Tank Mates

Least Killifish (Heterandria) & Dwarf Rasbora

Heterandria formosa · Boraras maculatus

Possible with Caution
Least Killifish (Heterandria): PeacefulDwarf Rasbora: Peaceful

Least Killifish (Heterandria) & Eastern Rainbowfish

Heterandria formosa · Melanotaenia splendida

Possible with Caution
Least Killifish (Heterandria): PeacefulEastern Rainbowfish: Peaceful

Least Killifish (Heterandria) & Electric Blue Crayfish

Heterandria formosa · Procambarus alleni

Not Recommended
Least Killifish (Heterandria): PeacefulElectric Blue Crayfish: Aggressive

Least Killifish (Heterandria) & Electric Blue Hap

Heterandria formosa · Sciaenochromis fryeri

Not Recommended
Least Killifish (Heterandria): PeacefulElectric Blue Hap: Aggressive

Least Killifish (Heterandria) & Electric Blue Johannii

Heterandria formosa · Pseudotropheus johannii

Possible with Caution
Least Killifish (Heterandria): PeacefulElectric Blue Johannii: Aggressive

Least Killifish (Heterandria) & Elongatus Cichlid (Pseudotropheus Elongatus)

Heterandria formosa · Chindongo elongatus

Possible with Caution
Least Killifish (Heterandria): PeacefulElongatus Cichlid (Pseudotropheus Elongatus): Aggressive

Least Killifish (Heterandria) & Ember Tetra

Heterandria formosa · Hyphessobrycon amandae

Possible with Caution
Least Killifish (Heterandria): PeacefulEmber Tetra: Peaceful

Least Killifish (Heterandria) & Emerald Dwarf Danio

Heterandria formosa · Danio erythromicron

Ideal Tank Mates
Least Killifish (Heterandria): PeacefulEmerald Dwarf Danio: Peaceful

Least Killifish (Heterandria) & Emerald Eye Rasbora

Heterandria formosa · Brevibora dorsiocellata

Possible with Caution
Least Killifish (Heterandria): PeacefulEmerald Eye Rasbora: Peaceful

Least Killifish (Heterandria) & Emerald Green Cory

Heterandria formosa · Corydoras splendens

Possible with Caution
Least Killifish (Heterandria): PeacefulEmerald Green Cory: Peaceful

Least Killifish (Heterandria) & Emperor Snakehead

Heterandria formosa · Channa marulioides

Not Recommended
Least Killifish (Heterandria): PeacefulEmperor Snakehead: Highly Aggressive

Least Killifish (Heterandria) & Emperor Tetra

Heterandria formosa · Nematobrycon palmeri

Possible with Caution
Least Killifish (Heterandria): PeacefulEmperor Tetra: Peaceful

Least Killifish (Heterandria) & Empire Gudgeon

Heterandria formosa · Hypseleotris compressa

Possible with Caution
Least Killifish (Heterandria): PeacefulEmpire Gudgeon: Mostly Peaceful

Least Killifish (Heterandria) & Endler's Livebearer

Heterandria formosa · Poecilia wingei

Possible with Caution
Least Killifish (Heterandria): PeacefulEndler's Livebearer: Peaceful

Least Killifish (Heterandria) & Espei Rasbora (Lambchop Rasbora)

Heterandria formosa · Trigonostigma espei

Possible with Caution
Least Killifish (Heterandria): PeacefulEspei Rasbora (Lambchop Rasbora): Peaceful

Least Killifish (Heterandria) & Exquisite Rainbowfish

Heterandria formosa · Melanotaenia exquisita

Possible with Caution
Least Killifish (Heterandria): PeacefulExquisite Rainbowfish: Peaceful

Least Killifish (Heterandria) & Fahaka Puffer

Heterandria formosa · Tetraodon lineatus

Not Recommended
Least Killifish (Heterandria): PeacefulFahaka Puffer: Highly Aggressive

Least Killifish (Heterandria) & Fairy Cichlid (Brichardi)

Heterandria formosa · Neolamprologus brichardi

Possible with Caution
Least Killifish (Heterandria): PeacefulFairy Cichlid (Brichardi): Aggressive

Least Killifish (Heterandria) & False Glass Catfish

Heterandria formosa · Kryptopterus macrocephalus

Possible with Caution
Least Killifish (Heterandria): PeacefulFalse Glass Catfish: Peaceful

Least Killifish (Heterandria) & False Rummy-Nose Tetra

Heterandria formosa · Petitella georgiae

Possible with Caution
Least Killifish (Heterandria): PeacefulFalse Rummy-Nose Tetra: Peaceful

Least Killifish (Heterandria) & False Siamese Algae Eater (Stonelapping Minnow)

Heterandria formosa · Garra cambodgiensis

Possible with Caution
Least Killifish (Heterandria): PeacefulFalse Siamese Algae Eater (Stonelapping Minnow): Semi-Aggressive

Least Killifish (Heterandria) & Featherfin Cichlid

Heterandria formosa · Cyathopharynx furcifer

Possible with Caution
Least Killifish (Heterandria): PeacefulFeatherfin Cichlid: Semi-Aggressive

Least Killifish (Heterandria) & Featherfin Squeaker

Heterandria formosa · Synodontis eupterus

Not Recommended
Least Killifish (Heterandria): PeacefulFeatherfin Squeaker: Semi-Aggressive

Least Killifish (Heterandria) & Festivum

Heterandria formosa · Mesonauta festivus

Possible with Caution
Least Killifish (Heterandria): PeacefulFestivum: Mostly Peaceful