Compatibility brief
Can Pea Puffer live with Turquoise / Lake Kutubu rainbowfish?
Caution. Check the issues below before buying.
Pea Puffer + Turquoise / Lake Kutubu rainbowfish: Temperament difference. Pea Puffer is semi-aggressive, while Turquoise / Lake Kutubu 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.
200L
Combined minimum footprint reference for these two species: about 200L (larger active fish often want more length).
Pea Puffer is a fin nipper and Turquoise / Lake Kutubu rainbowfish is vulnerable to nipping — long fins are a common target even when water parameters match.
Assessment details
Temperament difference
Top issuePea Puffer is semi-aggressive, while Turquoise / Lake Kutubu rainbowfish is peaceful. This can work with adequate space and hiding spots, but monitor for bullying.
Fin nipping risk
Pea Puffer is a known fin nipper and Turquoise / Lake Kutubu rainbowfish has long, flowing fins. Pea Puffer will likely harass Turquoise / Lake Kutubu rainbowfish.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Pea Puffer is semi-aggressive, while Turquoise / Lake Kutubu…”
Temperament difference
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Turquoise / Lake Kutubu rainbowfish can escape if harassed.
- •Avoid keeping Pea Puffer with long-finned fish like Turquoise / Lake Kutubu rainbowfish.
- •Pea Puffer should be kept in a group of at least 6 for best health and behaviour.
- •Turquoise / Lake Kutubu rainbowfish should be kept in a group of at least 6 for best health and behaviour.
Try instead
- →Provide plenty of hiding spots and visual breaks so Turquoise / Lake Kutubu rainbowfish can escape if harassed.
- →Avoid keeping Pea Puffer with long-finned fish like Turquoise / Lake Kutubu rainbowfish.
- →Pea Puffer should be kept in a group of at least 6 for best health and behaviour.
- →Turquoise / Lake Kutubu rainbowfish should be kept in a group of at least 6 for best health and behaviour.
- Seriously Fish. Carinotetraodon travancoricus
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Carinotetraodon travancoricus
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Carinotetraodon travancoricus
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. Melanotaenia lacustris
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Melanotaenia lacustris
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Melanotaenia lacustris
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 Pea Puffer + Turquoise / Lake Kutubu rainbowfish
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.