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 265 - 288 of 735 Tank Mates

Least Killifish (Heterandria) & Fiddler Crab (Brackish)

Heterandria formosa · Uca sp.

Possible with Caution

Least Killifish (Heterandria): PeacefulFiddler Crab (Brackish): Mostly Peaceful

Least Killifish (Heterandria) & Figure 8 Puffer (Brackish)

Heterandria formosa · Dichotomyctere ocellatus

Possible with Caution

Least Killifish (Heterandria): PeacefulFigure 8 Puffer (Brackish): Aggressive

Least Killifish (Heterandria) & Filament Barb

Heterandria formosa · Dawkinsia filamentosa

Possible with Caution

Least Killifish (Heterandria): PeacefulFilament Barb: Mostly Peaceful

Least Killifish (Heterandria) & Finger Fish

Heterandria formosa · Monodactylus argenteus

Possible with Caution

Least Killifish (Heterandria): PeacefulFinger Fish: Semi-Aggressive

Least Killifish (Heterandria) & Fire Eel

Heterandria formosa · Mastacembelus erythrotaenia

Least Killifish (Heterandria) & Fire Tetra

Heterandria formosa · Hyphessobrycon flammeus

Possible with Caution

Least Killifish (Heterandria): PeacefulFire Tetra: Peaceful

Least Killifish (Heterandria) & Firemouth Cichlid

Heterandria formosa · Thorichthys meeki

Possible with Caution

Least Killifish (Heterandria): PeacefulFiremouth Cichlid: Semi-Aggressive

Least Killifish (Heterandria) & Five Banded Barb

Heterandria formosa · Desmopuntius pentazona

Possible with Caution

Least Killifish (Heterandria): PeacefulFive Banded Barb: Peaceful

Least Killifish (Heterandria) & Flag Tetra

Heterandria formosa · Hyphessobrycon heterorhabdus

Possible with Caution

Least Killifish (Heterandria): PeacefulFlag Tetra: Peaceful

Least Killifish (Heterandria) & Flagtail Cory (Mrs Schwartz's Cory)

Heterandria formosa · Corydoras robineae

Possible with Caution

Least Killifish (Heterandria): PeacefulFlagtail Cory (Mrs Schwartz's Cory): Peaceful

Least Killifish (Heterandria) & Flagtail Prochilodus

Heterandria formosa · Semaprochilodus insignis

Possible with Caution

Least Killifish (Heterandria): PeacefulFlagtail Prochilodus: Semi-Aggressive

Least Killifish (Heterandria) & Flash Pleco (L204)

Heterandria formosa · Panaqolus albomaculatus

Possible with Caution

Least Killifish (Heterandria): PeacefulFlash Pleco (L204): Mostly Peaceful

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

Heterandria formosa · Chindongo flavus

Possible with Caution

Least Killifish (Heterandria): PeacefulFlavus Cichlid (Pseudotropheus Flavus): Aggressive

Least Killifish (Heterandria) & Florida Flagfish

Heterandria formosa · Jordanella floridae

Possible with Caution

Least Killifish (Heterandria): PeacefulFlorida Flagfish: Semi-Aggressive

Least Killifish (Heterandria) & Florida Gar

Heterandria formosa · Lepisosteus platyrhincus

Least Killifish (Heterandria) & Flower Stingray

Heterandria formosa · Potamotrygon schroederi

Least Killifish (Heterandria) & Flowerhorn Cichlid

Heterandria formosa · Hybrid cichlid (Amphilophus cross)

Least Killifish (Heterandria) & Fly River Rainbowfish

Heterandria formosa · Melanotaenia sexlineata

Possible with Caution

Least Killifish (Heterandria): PeacefulFly River Rainbowfish: Peaceful

Least Killifish (Heterandria) & Flying Fox

Heterandria formosa · Epalzeorhynchos kalopterus

Possible with Caution

Least Killifish (Heterandria): PeacefulFlying Fox: Aggressive

Least Killifish (Heterandria) & Flyspeck Hardyhead

Heterandria formosa · Craterocephalus stercusmuscarum

Possible with Caution

Least Killifish (Heterandria): PeacefulFlyspeck Hardyhead: Peaceful

Least Killifish (Heterandria) & Forktail Blue-eye

Heterandria formosa · Pseudomugil furcatus

Possible with Caution

Least Killifish (Heterandria): PeacefulForktail Blue-eye: Peaceful

Least Killifish (Heterandria) & Fort Maguire Peacock

Heterandria formosa · Aulonocara hansbaenschi

Possible with Caution

Least Killifish (Heterandria): PeacefulFort Maguire Peacock: Semi-Aggressive

Least Killifish (Heterandria) & Fosso Cichlid (Fossorochromis rostratus)

Heterandria formosa · Fossorochromis rostratus

Least Killifish (Heterandria) & Freshwater Angelfish

Heterandria formosa · Pterophyllum scalare