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Compatibility

Compatibility brief

Can Bristlenose Pleco live with Guppy?

Bristlenose Pleco

Bristlenose Pleco

Ancistrus sp.

peaceful~15cm
Guppy

Guppy

Poecilia reticulata

peaceful~5cm
VerdictCAUTION

Caution. Check the issues below before buying.

Bristlenose Pleco and Guppy: Identification or trade-name ambiguity for at least one side, so this is a cautious read, not a green light. Plan for adult sizes, a stable shared water window, and individual behaviour; verify against a second reference you trust.

Compatibility score

65/100

Profile confidence: low

Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.

Min tank

80L

Combined minimum footprint reference for these two species: about 80L (larger active fish often want more length).

Temperature
Range in °C22–27°C shared
Bristlenose PlecoGuppyShared window
pH
Range6.8–7.5 shared
Bristlenose PlecoGuppyShared window

Assessment details

  1. Data or identification limits

    Top issue

    At least one fish has common trade or ID ambiguity, so the numbers here may not match the individual in the shop.

  2. Compatible temperaments

    Both Bristlenose Pleco and Guppy share a peaceful temperament.

  3. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“At least one fish has common trade or ID ambiguity, so the…”

Data or identification limits
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.

Try this next

Build the full stocking list with Bristlenose Pleco + Guppy

Compare another pairOpen tank builder

Plan further

Check each species’ mates list, size the glass, then verify the full stock in the builder. 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 (Bristlenose Pleco): Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.

Full tank-mate guides

Related pair checks

Bristlenose Pleco + Guppy — common questions

Can Bristlenose Pleco live with Guppy?
Yes, if you plan for it. The verdict is CAUTION, which means the pairing works when specific conditions are met, not by default. The assessment details on this page list what to set up first.
What tank size do you need for Bristlenose Pleco and Guppy together?
Plan around 80 litres as the working minimum. That figure comes from each species' published minimum and their group needs, and it assumes adult sizes, not shop sizes.
What's the main risk?
Data or identification limits. That is the first thing to plan around. The matching entry under assessment details on this page explains the reasoning and the numbers behind it.