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Compatibility

Compatibility brief

Can Discus live with Rummy Nose Tetra?

Discus

Discus

Symphysodon sp.

peaceful~20cm
Rummy Nose Tetra

Rummy Nose Tetra

Hemigrammus rhodostomus

peaceful~5cm
VerdictCAUTION

Caution. Check the issues below before buying.

Discus + Rummy Nose Tetra: Narrow temperature overlap. Discus and Rummy Nose Tetra have only a narrow shared temperature range. Maintaining stable water temperature will be important. 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

200L

Combined minimum footprint reference for these two species: about 200L (larger active fish often want more length).

Temperature
Range in °C28–28°C shared
DiscusRummy Nose TetraShared window
pH
Range6–7 shared
DiscusRummy Nose TetraShared window

Assessment details

  1. Compatible temperaments

    Both Discus and Rummy Nose Tetra share a peaceful temperament.

  2. Narrow temperature overlap

    Top issue

    Discus and Rummy Nose Tetra have only a narrow shared temperature range. Maintaining stable water temperature will be important.

“Discus and Rummy Nose Tetra have only a narrow shared…”

Narrow temperature overlap

Next steps

Concrete changes, not "research more" filler.

  • •Discus should be kept in a group of at least 4 for best health and behaviour.
  • •Rummy Nose Tetra should be kept in a group of at least 8 for best health and behaviour.
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 Discus + Rummy Nose Tetra

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

Discus + Rummy Nose Tetra — common questions

Can Discus live with Rummy Nose Tetra?
Yes, if you plan for it. The verdict is CAUTION, which means the pairing works when specific conditions are met, not by default. The first condition: Discus should be kept in a group of at least 4 for best health and behaviour.
What tank size do you need for Discus and Rummy Nose Tetra together?
Plan around 200 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?
Narrow temperature overlap. 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?
Rummy Nose Tetra should be kept in a group of at least 8 for best health and behaviour.