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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 457 - 480 of 735 Tank Mates

Least Killifish (Heterandria) & Nerite Snail

Heterandria formosa · Neritina natalensis

Possible with Caution
Least Killifish (Heterandria): PeacefulNerite Snail: Peaceful

Least Killifish (Heterandria) & New Guinea Rainbowfish

Heterandria formosa · Melanotaenia affinis

Possible with Caution
Least Killifish (Heterandria): PeacefulNew Guinea Rainbowfish: Peaceful

Least Killifish (Heterandria) & New Guinea Tigerfish

Heterandria formosa · Datnioides campbelli

Not Recommended
Least Killifish (Heterandria): PeacefulNew Guinea Tigerfish: Aggressive

Least Killifish (Heterandria) & Nile Tilapia

Heterandria formosa · Oreochromis niloticus

Not Recommended
Least Killifish (Heterandria): PeacefulNile Tilapia: Aggressive

Least Killifish (Heterandria) & Ninja Shrimp

Heterandria formosa · Caridina serratirostris

Possible with Caution
Least Killifish (Heterandria): PeacefulNinja Shrimp: Peaceful

Least Killifish (Heterandria) & Norman's Lampeye Killifish

Heterandria formosa · Poropanchax normani

Possible with Caution
Least Killifish (Heterandria): PeacefulNorman's Lampeye Killifish: Peaceful

Least Killifish (Heterandria) & Northern Mountain Swordtail

Heterandria formosa · Xiphophorus nezahualcoyotl

Possible with Caution
Least Killifish (Heterandria): PeacefulNorthern Mountain Swordtail: Mostly Peaceful

Least Killifish (Heterandria) & Nyererei Victorian Cichlid

Heterandria formosa · Pundamilia nyererei

Possible with Caution
Least Killifish (Heterandria): PeacefulNyererei Victorian Cichlid: Aggressive

Least Killifish (Heterandria) & Ocellatus Gold

Heterandria formosa · Lamprologus ocellatus

Possible with Caution
Least Killifish (Heterandria): PeacefulOcellatus Gold: Aggressive

Least Killifish (Heterandria) & Odessa Barb

Heterandria formosa · Pethia padamya

Possible with Caution
Least Killifish (Heterandria): PeacefulOdessa Barb: Mostly Peaceful

Least Killifish (Heterandria) & Ogilby's Rainbowfish

Heterandria formosa · Melanotaenia ogilbyi

Possible with Caution
Least Killifish (Heterandria): PeacefulOgilby's Rainbowfish: Peaceful

Least Killifish (Heterandria) & Olga Cory

Heterandria formosa · Corydoras simulatus

Possible with Caution
Least Killifish (Heterandria): PeacefulOlga Cory: Peaceful

Least Killifish (Heterandria) & Olive Nerite Snail

Heterandria formosa · Neritina reclivata

Possible with Caution
Least Killifish (Heterandria): PeacefulOlive Nerite Snail: Peaceful

Least Killifish (Heterandria) & One-Spot Betta

Heterandria formosa · Betta unimaculata

Not Recommended
Least Killifish (Heterandria): PeacefulOne-Spot Betta: Semi-Aggressive

Least Killifish (Heterandria) & Orange Chromide

Heterandria formosa · Etroplus maculatus

Possible with Caution
Least Killifish (Heterandria): PeacefulOrange Chromide: Mostly Peaceful

Least Killifish (Heterandria) & Orange Delight Shrimp

Heterandria formosa · Caridina loehae

Possible with Caution
Least Killifish (Heterandria): PeacefulOrange Delight Shrimp: Peaceful

Least Killifish (Heterandria) & Orange Peacock

Heterandria formosa · Aulonocara stuartgranti maleri

Possible with Caution
Least Killifish (Heterandria): PeacefulOrange Peacock: Semi-Aggressive

Least Killifish (Heterandria) & Orangespotted Snakehead

Heterandria formosa · Channa aurantimaculata

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

Least Killifish (Heterandria) & Orangespotted Sunfish

Heterandria formosa · Lepomis humilis

Possible with Caution
Least Killifish (Heterandria): PeacefulOrangespotted Sunfish: Semi-Aggressive

Least Killifish (Heterandria) & Ornate Bichir

Heterandria formosa · Polypterus ornatipinnis

Not Recommended
Least Killifish (Heterandria): PeacefulOrnate Bichir: Semi-Aggressive

Least Killifish (Heterandria) & Ornate Rainbowfish

Heterandria formosa · Rhadinocentrus ornatus

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

Least Killifish (Heterandria) & Oscar

Heterandria formosa · Astronotus ocellatus

Not Recommended
Least Killifish (Heterandria): PeacefulOscar: Aggressive

Least Killifish (Heterandria) & Otocinclus

Heterandria formosa · Otocinclus vittatus

Ideal Tank Mates
Least Killifish (Heterandria): PeacefulOtocinclus: Peaceful

Least Killifish (Heterandria) & Pacific Blue Eye

Heterandria formosa · Pseudomugil signifer

Possible with Caution
Least Killifish (Heterandria): PeacefulPacific Blue Eye: Peaceful