Compatibility brief
Can Threadfin rainbowfish live with Tiger Barb?
Caution. Check the issues below before buying.
Threadfin rainbowfish + Tiger Barb: Temperament difference. Tiger Barb is semi-aggressive, while Threadfin rainbowfish is peaceful. This can work with adequate space and hiding spots, but monitor for bullying. Outcomes still depend on your tank shape, maintenance routine, and individual fish.
Compatibility score
Profile confidence: medium
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
80L
Combined minimum footprint reference for these two species: about 80L (larger active fish often want more length).
Tiger Barb is a fin nipper and Threadfin rainbowfish is vulnerable to nipping — long fins are a common target even when water parameters match.
Assessment details
Temperament difference
Top issueTiger Barb is semi-aggressive, while Threadfin rainbowfish is peaceful. This can work with adequate space and hiding spots, but monitor for bullying.
Fin nipping risk
Tiger Barb is a known fin nipper and Threadfin rainbowfish has long, flowing fins. Tiger Barb will likely harass Threadfin rainbowfish.
Narrow temperature overlap
Threadfin rainbowfish and Tiger Barb have only a narrow shared temperature range. Maintaining stable water temperature will be important.
“Tiger Barb is semi-aggressive, while Threadfin rainbowfish is…”
Temperament difference
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Threadfin rainbowfish can escape if harassed.
- •Avoid keeping Tiger Barb with long-finned fish like Threadfin rainbowfish.
- •Threadfin rainbowfish should be kept in a group of at least 8 for best health and behaviour.
- •Tiger Barb should be kept in a group of at least 8 for best health and behaviour.
Try instead
- →Provide plenty of hiding spots and visual breaks so Threadfin rainbowfish can escape if harassed.
- →Avoid keeping Tiger Barb with long-finned fish like Threadfin rainbowfish.
- →Threadfin rainbowfish should be kept in a group of at least 8 for best health and behaviour.
- →Tiger Barb should be kept in a group of at least 8 for best health and behaviour.
- Seriously Fish. Iriatherina werneri
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Iriatherina werneri
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Iriatherina werneri
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Seriously Fish. Puntigrus tetrazona
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Puntigrus tetrazona
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Puntigrus tetrazona
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 Threadfin rainbowfish + Tiger Barb
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.