Least Killifish (Heterandria) Tank Mates & Compatibility

Least Killifish (Heterandria)

Heterandria formosa

View full care guide

TemperamentPeaceful (1/10)

Adult Size3.5 cm

Temperature18–27°C

Water TypeBrackish Tolerant

Swim ZoneSurface, Mid-level, Bottom

StockingGroup of 3+

Showing 409 - 432 of 735 Tank Mates

Least Killifish (Heterandria) & Madagascar Rainbowfish

Heterandria formosa · Bedotia madagascariensis

Possible with Caution

Least Killifish (Heterandria): PeacefulMadagascar Rainbowfish: Peaceful

Least Killifish (Heterandria) & Maingano Mbuna

Heterandria formosa · Pseudotropheus cyaneorhabdos

Possible with Caution

Least Killifish (Heterandria): PeacefulMaingano Mbuna: Aggressive

Least Killifish (Heterandria) & Maison Reef Peacock

Heterandria formosa · Aulonocara stuartgranti "Maison Reef"

Possible with Caution

Least Killifish (Heterandria): PeacefulMaison Reef Peacock: Semi-Aggressive

Least Killifish (Heterandria) & Malawi Eyebiter

Heterandria formosa · Dimidiochromis compressiceps

Least Killifish (Heterandria) & Malawi Gar

Heterandria formosa · Lichnochromis acuticeps

Least Killifish (Heterandria) & Malawi Hawk

Heterandria formosa · Aristochromis christyi

Least Killifish (Heterandria) & Malaya Shrimp

Heterandria formosa · Caridina sp. "Malaya"

Possible with Caution

Least Killifish (Heterandria): PeacefulMalaya Shrimp: Peaceful

Least Killifish (Heterandria) & Malaysian Trumpet Snail (MTS)

Heterandria formosa · Melanoides tuberculata

Ideal Tank Mates

Least Killifish (Heterandria): PeacefulMalaysian Trumpet Snail (MTS): Peaceful

Least Killifish (Heterandria) & Mamberamo Rainbowfish

Heterandria formosa · Melanotaenia mamberamo

Possible with Caution

Least Killifish (Heterandria): PeacefulMamberamo Rainbowfish: Peaceful

Least Killifish (Heterandria) & Marble Goby

Heterandria formosa · Oxyeleotris marmorata

Least Killifish (Heterandria) & Marbled Bichir

Heterandria formosa · Polypterus polli

Least Killifish (Heterandria) & Marbled Hatchetfish

Heterandria formosa · Carnegiella strigata

Ideal Tank Mates

Least Killifish (Heterandria): PeacefulMarbled Hatchetfish: Peaceful

Least Killifish (Heterandria) & Marbled Whiptail

Heterandria formosa · Loricaria simillima

Ideal Tank Mates

Least Killifish (Heterandria): PeacefulMarbled Whiptail: Peaceful

Least Killifish (Heterandria) & Marlier's Julie

Heterandria formosa · Julidochromis marlieri

Least Killifish (Heterandria) & Masked Julie (Julidochromis)

Heterandria formosa · Julidochromis transcriptus

Possible with Caution

Least Killifish (Heterandria): PeacefulMasked Julie (Julidochromis): Semi-Aggressive

Least Killifish (Heterandria) & Mayan Cichlid

Heterandria formosa · Mayaheros urophthalmus

Least Killifish (Heterandria) & Mayland's Rainbowfish

Heterandria formosa · Melanotaenia maylandi

Possible with Caution

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

Least Killifish (Heterandria) & Mbu Puffer

Heterandria formosa · Tetraodon mbu

Least Killifish (Heterandria) & Melon Barb

Heterandria formosa · Haludaria fasciata

Possible with Caution

Least Killifish (Heterandria): PeacefulMelon Barb: Mostly Peaceful

Least Killifish (Heterandria) & Mexican Dwarf Crayfish (CPO)

Heterandria formosa · Cambarellus patzcuarensis

Possible with Caution

Least Killifish (Heterandria): PeacefulMexican Dwarf Crayfish (CPO): Mostly Peaceful

Least Killifish (Heterandria) & Midas Cichlid

Heterandria formosa · Amphilophus citrinellus

Least Killifish (Heterandria) & Midnight Catfish

Heterandria formosa · Auchenipterichthys coracoideus

Least Killifish (Heterandria) & Milomo Hap (Super VC10)

Heterandria formosa · Placidochromis milomo

Possible with Caution

Least Killifish (Heterandria): PeacefulMilomo Hap (Super VC10): Semi-Aggressive

Least Killifish (Heterandria) & Misool Rainbowfish

Heterandria formosa · Melanotaenia misoolensis

Possible with Caution

Least Killifish (Heterandria): PeacefulMisool Rainbowfish: Peaceful