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Compatibility

Compatibility brief

Can Angelfish live with German Blue Ram?

Angelfish

Angelfish

Pterophyllum scalare

semi-aggressive~20cm
German Blue Ram

German Blue Ram

Mikrogeophagus ramirezi

peaceful~7cm
VerdictCAUTION

Caution. Check the issues below before buying.

Angelfish + German Blue Ram: Temperament difference. Angelfish is semi-aggressive, while German Blue Ram is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely. Outcomes still depend on your tank shape, maintenance routine, and individual fish.

Compatibility score

72/100

Profile confidence: medium

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 °C26–30°C shared
AngelfishGerman Blue RamShared window
pH
Range6.5–7 shared
AngelfishGerman Blue RamShared window
Size / predation

Angelfish (20cm adult) may treat small German Blue Ram (~7cm) as food once grown — plan adult sizes, not shop sizes.

Temperament / behaviour

Both are South American cichlids that can share soft warm water on paper, but angelfish are taller, more assertive midwater holders while rams claim low territory and spawn sites. Fishori’s live verdict is CAUTION for that temperament and space clash, not a hard predation rule. Keepers who treat rams as “just another peaceful dwarf” under angels often see spawning stress, chasing at the substrate, or a ram that never settles. Tall planted tanks with defined bottom structure help; a short display tank usually does not.

Assessment details

  1. Temperament difference

    Top issue

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

  2. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

“Angelfish is semi-aggressive, while German Blue Ram is peaceful”

Temperament difference

Next steps

Concrete changes, not "research more" filler.

  • •Use a tall planted tank, give the ram a clear bottom territory away from the angels’ sight lines, and be ready to separate if spawning defence starts.
  • •Provide plenty of hiding spots and visual breaks so German Blue Ram can escape if harassed.
Sources from both profiles
Only URLs that exist on the species records are shown. We do not fabricate citations.
  • Seriously Fish. Pterophyllum scalare

    Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).

  • FishBase. Pterophyllum scalare

    Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.

  • Wikipedia. Pterophyllum scalare

    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. Mikrogeophagus ramirezi

    Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).

  • FishBase. Mikrogeophagus ramirezi

    Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.

  • Wikipedia. Mikrogeophagus ramirezi

    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 Angelfish + German Blue Ram

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: high. Checked against several solid care sources that mostly agree.

Full tank-mate guides

Related pair checks

Angelfish + German Blue Ram — common questions

Can Angelfish live with German Blue Ram?
Yes, if you plan for it. The live verdict is CAUTION because angelfish are semi-aggressive relative to a peaceful ram. Soft warm water alone is not enough — give height, cover, and an exit plan if the ram is harassed.
What tank size do you need for Angelfish and German Blue Ram 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 German Blue Ram can escape if harassed.