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 553 - 576 of 735 Tank Mates

Least Killifish (Heterandria) & Red Phantom Tetra

Heterandria formosa · Hyphessobrycon sweglesi

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Phantom Tetra: Peaceful

Least Killifish (Heterandria) & Red Rainbowfish

Heterandria formosa · Glossolepis incisus

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Rainbowfish: Mostly Peaceful

Least Killifish (Heterandria) & Red Striped Eartheater

Heterandria formosa · Geophagus surinamensis

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Striped Eartheater: Mostly Peaceful

Least Killifish (Heterandria) & Red Swamp Crayfish

Heterandria formosa · Procambarus clarkii

Least Killifish (Heterandria) & Red Tail Barracuda

Heterandria formosa · Acestrorhynchus falcatus

Least Killifish (Heterandria) & Red Tailed Black Shark

Heterandria formosa · Epalzeorhynchos bicolor

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Tailed Black Shark: Aggressive

Least Killifish (Heterandria) & Red Tailed Redeye Puffer

Heterandria formosa · Carinotetraodon irrubesco

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Tailed Redeye Puffer: Semi-Aggressive

Least Killifish (Heterandria) & Red Terror (Festa's Cichlid)

Heterandria formosa · Mesoheros festae

Least Killifish (Heterandria) & Red Top Cobalt Cichlid

Heterandria formosa · Metriaclima greshakei

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Top Cobalt Cichlid: Aggressive

Least Killifish (Heterandria) & Red Tupfel Shrimp

Heterandria formosa · Caridina serrata

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Tupfel Shrimp: Peaceful

Least Killifish (Heterandria) & Red Zebra Cichlid (Cherry Red)

Heterandria formosa · Metriaclima estherae

Possible with Caution

Least Killifish (Heterandria): PeacefulRed Zebra Cichlid (Cherry Red): Aggressive

Least Killifish (Heterandria) & Red-Bellied Piranha

Heterandria formosa · Pygocentrus nattereri

Least Killifish (Heterandria) & Red-Finned Rainbowfish

Heterandria formosa · Melanotaenia rubripinnis

Possible with Caution

Least Killifish (Heterandria): PeacefulRed-Finned Rainbowfish: Peaceful

Least Killifish (Heterandria) & Red-Tail Catfish

Heterandria formosa · Phractocephalus hemioliopterus

Least Killifish (Heterandria) & Redbreast Sunfish

Heterandria formosa · Lepomis auritus

Least Killifish (Heterandria) & Redear Sunfish

Heterandria formosa · Lepomis microlophus

Least Killifish (Heterandria) & Redhead Cichlid

Heterandria formosa · Vieja melanura

Possible with Caution

Least Killifish (Heterandria): PeacefulRedhead Cichlid: Aggressive

Least Killifish (Heterandria) & Redhead Severum

Heterandria formosa · Heros sp. Rotkeil

Possible with Caution

Least Killifish (Heterandria): PeacefulRedhead Severum: Semi-Aggressive

Least Killifish (Heterandria) & Redline Rasbora

Heterandria formosa · Rasbora pauciperforata

Least Killifish (Heterandria) & Redtail Splitfin

Heterandria formosa · Xenotoca eiseni

Possible with Caution

Least Killifish (Heterandria): PeacefulRedtail Splitfin: Semi-Aggressive

Least Killifish (Heterandria) & Reedfish (Ropefish)

Heterandria formosa · Erpetoichthys calabaricus

Least Killifish (Heterandria) & Regan's Julie

Heterandria formosa · Julidochromis regani

Possible with Caution

Least Killifish (Heterandria): PeacefulRegan's Julie: Aggressive

Least Killifish (Heterandria) & Reticulated Hillstream Loach

Heterandria formosa · Sewellia lineolata

Possible with Caution

Least Killifish (Heterandria): PeacefulReticulated Hillstream Loach: Mostly Peaceful

Least Killifish (Heterandria) & Reticulated Stingray (Teacup Ray)

Heterandria formosa · Potamotrygon orbignyi