Compatibility brief
Can Cherry Shrimp live with Oscar?
Risky. This mix is commonly discouraged for typical setups.
Compatibility score
Profile confidence: low
How we decideFishori checks adult size and predation risk, behaviour, water requirements and tank needs before giving a verdict.
300L
Combined minimum footprint reference for these two species: about 300L (larger active fish often want more length).
Oscar (about 35cm as an adult) can realistically eat Cherry Shrimp (about 2.5cm) once grown. Plan around adult sizes, not shop sizes.
Cherry Shrimp (peaceful) and Oscar (aggressive) are far apart on aggression — bullying or injury is a common outcome in average community layouts.
Assessment details
Known incompatible pairing
Top issueOscars treat dwarf shrimp as a feed item. A 30 cm predator and a 2 cm shrimp do not share a tank in any plan.
Oscar may eat Cherry Shrimp
Oscar (35cm) is predatory and Cherry Shrimp (2.5cm) is small enough to be eaten. This pairing is unsafe.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Oscars treat dwarf shrimp as a feed item”
Known incompatible pairing
Next steps
Concrete changes, not "research more" filler.
- •Cherry Shrimp should be kept in a group of at least 10 for best health and behaviour.
- •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.
Try instead
- →Build a species-only tank for the larger fish, or restock with fish too large to be eaten at adult sizes.
- Aquarium Co-Op. Cherry Shrimp Care Guide
Primary: retailer care page covering tank size, water parameters, breeding, and sensitivity to copper and ammonia.
- Seriously Fish. Neocaridina davidi
Secondary: species reference. Note Seriously Fish still uses the older epithet 'denticulata' on some pages; current valid name is N. davidi.
- Seriously Fish. Astronotus ocellatus
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Astronotus ocellatus
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Astronotus ocellatus
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Wikipedia. Astronotus ocellatus (oscar)
Encyclopaedia overview; use specialist aquarium sources for your stock's real temperature/pH/footprint needs.
Try this next
Build the full stocking list with Cherry Shrimp + Oscar
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 (Cherry Shrimp): Typical care sources — real tanks still vary.