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Compatibility

Compatibility brief

Can Angelfish live with Bristlenose Pleco?

Angelfish

Angelfish

Pterophyllum scalare

semi-aggressive~20cm
Bristlenose Pleco

Bristlenose Pleco

Ancistrus sp.

peaceful~15cm
VerdictCAUTION

Caution. Check the issues below before buying.

Angelfish + Bristlenose Pleco: Caution advised. Still the usual South American pairing people actually keep. Angels midwater, bristlenose on wood below. The caution is angel territoriality in short tanks and nitrate load — give height, softwood, and real water changes, not a 60L cube. Outcomes still depend on your tank shape, maintenance routine, and individual fish.

Compatibility score

72/100

Profile confidence: low

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

Min tank

150L

Combined minimum footprint reference for these two species: about 150L (larger active fish often want more length).

Temperature
Range in °C24–27°C shared
AngelfishBristlenose PlecoShared window
pH
Range6.5–7.5 shared
AngelfishBristlenose PlecoShared window
Temperament / behaviour

This remains a common South American community pairing, but it is not automatic. Angels may bother a pleco at breeding time, and a bristlenose needs wood, caves, and sinking food the angels will not finish first. Water overlap is usually workable; the friction is territory and feeding on the bottom of a tall tank.

Assessment details

  1. Caution advised

    Top issue

    Still the usual South American pairing people actually keep. Angels midwater, bristlenose on wood below. The caution is angel territoriality in short tanks and nitrate load — give height, softwood, and real water changes, not a 60L cube.

  2. Temperament difference

    Angelfish is semi-aggressive, while Bristlenose Pleco is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.

  3. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Still the usual South American pairing people actually keep”

Caution advised

Next steps

Concrete changes, not "research more" filler.

  • •Give the bristlenose its own cave and wood away from the angel pair’s chosen vertical slice, and feed sinking wafers after lights-out.
  • •Provide plenty of hiding spots and visual breaks so Bristlenose Pleco can escape if harassed.
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 Angelfish + Bristlenose Pleco

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

Angelfish + Bristlenose Pleco — common questions

Can Angelfish live with Bristlenose Pleco?
Yes, if you plan for it. The verdict is CAUTION: the pairing is common in soft-water tanks, but breeding angels and a hungry bristlenose still need separate bottom space and deliberate feeding.
What tank size do you need for Angelfish and Bristlenose Pleco together?
Plan around 150 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?
Temperament difference. 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.
What should you check before buying?
Provide plenty of hiding spots and visual breaks so Bristlenose Pleco can escape if harassed.