Compatibility brief
Can Columbian Tetra live with Guppy?
Caution. Check the issues below before buying.
Columbian Tetra + Guppy: Fin nipping risk. Columbian Tetra is a known fin nipper and Guppy has long, flowing fins. Columbian Tetra will likely harass Guppy.
Compatibility score
Profile confidence: low
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).
Columbian Tetra is a fin nipper and Guppy is vulnerable to nipping — long fins are a common target even when water parameters match.
Assessment details
Compatible temperaments
Both Columbian Tetra and Guppy share a peaceful temperament.
Fin nipping risk
Top issueColumbian Tetra is a known fin nipper and Guppy has long, flowing fins. Columbian Tetra will likely harass Guppy.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Columbian Tetra is a known fin nipper and Guppy has long,…”
Fin nipping risk
Next steps
Concrete changes, not "research more" filler.
- •Avoid keeping Columbian Tetra with long-finned fish like Guppy.
- •Columbian Tetra should be kept in a group of at least 8 for best health and behaviour.
Try instead
- →Avoid keeping Columbian Tetra with long-finned fish like Guppy.
- →Columbian Tetra should be kept in a group of at least 8 for best health and behaviour.
- Seriously Fish. Hyphessobrycon columbianus
Primary: species page covering Colombian range, water chemistry preferences, and the documented fin-nipping under-stocking issue.
- Practical Fishkeeping. Columbian Tetra Profile
Secondary: editor coverage of the species' robust size, schooling needs, and the betta-incompatibility warning.
- Seriously Fish. Poecilia reticulata
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Poecilia reticulata
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Poecilia reticulata
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Wikipedia. Guppy
Encyclopaedia overview; use specialist aquarium sources for your stock's real temperature/pH/footprint needs.
Try this next
Build the full stocking list with Columbian Tetra + Guppy
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: medium. Driven by the lower-confidence profile (Columbian Tetra): Based on typical aquarium care sources; details may vary between setups.