Compatibility brief
Can Cherry Shrimp live with Oscar?
Risky. This mix is commonly discouraged for typical setups.
Cherry Shrimp + Oscar: Known incompatible pairing. Oscars treat dwarf shrimp as a feed item. A 30 cm predator and a 2 cm shrimp do not share a tank in any plan. Real tanks add variables Fishori cannot model; treat this as a high-risk read, not certainty.
Compatibility score
Profile confidence: low
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
300L
Combined minimum footprint reference for these two species: about 300L (larger active fish often want more length).
Oscar (35cm adult) may treat small Cherry Shrimp (~2.5cm) as food once grown — plan 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.
Aggression mismatch
Oscar is aggressive, while Cherry Shrimp is peaceful. The aggressive fish will likely bully or harm the peaceful one.
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.
Try instead
- →Cherry Shrimp should be kept in a group of at least 10 for best health and behaviour.
- →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
Try both species in the full-stock tank check, or open either fish profile for mates lists. 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): Based on typical aquarium care sources; details may vary between setups.