Compatibility brief
Can Betta live with Opaline gourami?
Caution. Check the issues below before buying.
Betta + Opaline gourami: Fin nipping risk. Opaline gourami is a known fin nipper and Betta has long, flowing fins. Opaline gourami will likely harass Betta.
Compatibility score
Profile confidence: medium
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
150L
Combined minimum footprint reference for these two species: about 150L (larger active fish often want more length).
Opaline gourami is a fin nipper and Betta is vulnerable to nipping — long fins are a common target even when water parameters match.
Assessment details
Compatible temperaments
Both Betta and Opaline gourami share a semi-aggressive temperament.
Fin nipping risk
Top issueOpaline gourami is a known fin nipper and Betta has long, flowing fins. Opaline gourami will likely harass Betta.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Opaline gourami is a known fin nipper and Betta has long,…”
Fin nipping risk
Next steps
Concrete changes, not "research more" filler.
- •Avoid keeping Opaline gourami with long-finned fish like Betta.
Try instead
- →Avoid keeping Opaline gourami with long-finned fish like Betta.
- Seriously Fish. Betta splendens
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Betta splendens
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Betta splendens
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Wikipedia. Betta splendens
Encyclopaedia overview; use specialist aquarium sources for your stock's real temperature/pH/footprint needs.
- Seriously Fish. Trichopodus trichopterus
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Trichopodus trichopterus
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Trichopodus trichopterus
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
Try this next
Build the full stocking list with Betta + Opaline gourami
Plan further
Try both species in the full-stock tank check, or open either fish profile for mates lists. Methodology explains how verdicts are produced.
Individual fish vary in personality. Fishori uses conservative hobby rules. Observe any new introduction closely, feed thoughtfully, and keep a quarantine or backup plan. This is not veterinary advice.
Profile data confidence: high. Based on multiple reputable aquarium care sources with strong agreement.