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Compatibility

Compatibility brief

Can Green Terror live with Oscar?

Green Terror

Green Terror

Andinoacara rivulatus

aggressive~30cm
Oscar

Oscar

Astronotus ocellatus

aggressive~35cm
VerdictGOOD

Often a workable match in a suitable, well-run tank. Still verify behaviour in your setup.

In many setups, Green Terror and Oscar are often kept together in a suitable peaceful community when temperature and pH are matched and the tank is sized for adults. Individual behaviour, filtration, and layout still decide whether it works in your home.

Compatibility score

100/100

Profile confidence: high

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

Min tank

300L

Combined minimum footprint reference for these two species: about 300L (larger active fish often want more length).

Temperature
Range in °C23–26°C shared
Green TerrorOscarShared window
pH
Range6.5–8 shared
Green TerrorOscarShared window

Assessment details

  1. Compatible temperaments

    Both Green Terror and Oscar share a aggressive temperament.

  2. Compatible temperature range

    Both fish can comfortably share similar water temperatures.

Next steps

Concrete changes, not "research more" filler.

  • •Green Terror reaches ~30cm: tank length and turning room matter more than the litre number. A tall, short tank of the same volume is not equivalent.
  • •Oscar reaches ~35cm: tank length and turning room matter more than the litre number. A tall, short tank of the same volume is not equivalent.
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 Green Terror + Oscar

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

Other tank mates for Green Terror

Green Terror + Oscar — common questions

Can Green Terror live with Oscar?
Usually, yes. The pairing resolves GOOD in Fishori's checks for a tank of about 300 litres or more with the shared water windows shown on this page. Individual fish still vary, so watch the first weeks closely.
What tank size do you need for Green Terror and Oscar together?
Plan around 300 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 should you check before buying?
Green Terror reaches ~30cm: tank length and turning room matter more than the litre number. A tall, short tank of the same volume is not equivalent. Oscar reaches ~35cm: tank length and turning room matter more than the litre number. A tall, short tank of the same volume is not equivalent.