Moonlight gourami tank mates
A large silver-blue gourami at 15 cm that is calmer than three-spot or opaline. Males still contest each other but more tolerant of community companions.
Common mistakeMixing a moonlight gourami with bettas or dwarf gouramis because all are “labyrinth fish” is how keepers invent torn fins. Adults near 15 cm casually dominate smaller gouramis and claim the surface. Give them a large planted footprint of their own class, not a shared nano surface with a male betta.
Each name below opens a pair check with Moonlight gourami. That check is the decision, not the list itself.
Usually safer companions
Conservative shortlist from this profile. Open a pair page before you buy.
The Moonlight gourami profile lists Congo Tetra as a recommended pairing. Congo Tetra schools in groups of 8 or more, so plan room for the whole group rather than one fish.
The Moonlight gourami profile lists Dwarf Gourami as a recommended pairing. Dwarf Gourami is a peaceful beginner-care species with a 60L minimum. Run the pair checker for your specific tank before stocking.
The Moonlight gourami profile lists Pearl Gourami as both safe and a recommended pairing. Pearl Gourami is a peaceful beginner-care species with a 100L minimum. Run the pair checker for your specific tank before stocking.
Risky or situational
May work with more water, a mature system, or a species-only setup. Read the pair page before you experiment.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Marked risky or situational on the profile. Tank length and group size change the outcome more than a temperament label does.
Pea Puffer is flagged as a fin-nipper and Moonlight gourami carries the long-finned risk profile (veil tails, trailing fins). Expect torn fins within days unless the nipper is in a proper group and the long-finned fish has plenty of cover. Pea Puffer is flagged predatory. Equal-size adults usually coexist, but the moment one is stressed, sick, or smaller after a moult, it becomes prey. Pea Puffer is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Moonlight gourami. Run the pair checker before stocking.
Tiger Barb is flagged as a fin-nipper and Moonlight gourami carries the long-finned risk profile (veil tails, trailing fins). Expect torn fins within days unless the nipper is in a proper group and the long-finned fish has plenty of cover. Tiger Barb is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Moonlight gourami. Run the pair checker before stocking.
Fish to avoid with Moonlight gourami
Predation, aggression, or space rules on this profile. Treat these as poor default mixes.
African Cichlid is rated aggressive and Moonlight gourami is rated peaceful. No community-style planning carries that gap.
Moonlight gourami is flagged as predatory or as likely to eat small fish, and Ember Tetra at 2cm is well within an adult Moonlight gourami's gape.
Oscar reaches 35cm and is flagged predatory. Moonlight gourami at 15cm is prey-sized for it. Oscar is rated aggressive and Moonlight gourami is rated peaceful. No community-style planning carries that gap.
Tank size and groups
- Published minimum for Moonlight gourami: 180L. Group minimum 1 .
- Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other. That is why pair checks include tank context, not only temperament.
- Nearest litre hub to this minimum: 200L hub.
Plan before you buy
Start a pair check with Moonlight gourami, or open a starter plan with the top safer companions in the builder.
Tank hubs: 200L
Related reading
Guides that list other fish with the same trait, so you can plan around the group rather than one row.
- Fish that eat smaller tank mates →
Moonlight gourami may eat anything that fits in its mouth as it grows.
- Peaceful community fish →
Other peaceful species to shortlist beside Moonlight gourami.
Filtration & heating
A 180L minimum tank for Moonlight gourami needs a filter rated for at least 720L/hr turnover and a heater maintaining 24–28°C.
Similar fish (same category)
- Opaline gourami · min 150L
- Paradise fish · min 120L
- Pearl Gourami · min 100L
- Chocolate gourami · min 80L
- Croaking gourami · min 80L
- Dwarf Gourami · min 60L
- Honey Gourami · min 40L
- Sparkling Gourami · min 40L
Moonlight gourami tank mates — quick answers
- What fish can live with Moonlight gourami?
- Usually safer companions on this hub include Congo Tetra, Dwarf Gourami, Pearl Gourami. Open each pair check before you buy — the list is a shortlist, not a guarantee.
- What tank mates should you avoid with Moonlight gourami?
- Avoid African Cichlid, Ember Tetra, Oscar based on size, temperament, or predation risk on this profile.
- What size tank do Moonlight gourami need for a community?
- 180L is the planning floor for adult swimming space and bioload. A 220L+ tank is the more comfortable long-term footprint. Length and depth matter as much as raw litres for active or territorial fish.