Compatibility brief
Can Jack Dempsey live with Mystery Snail?
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.
200L
Combined minimum footprint reference for these two species: about 200L (larger active fish often want more length).
Jack Dempsey (about 25cm as an adult) can realistically eat Mystery Snail (about 5cm) once grown. Plan around adult sizes, not shop sizes.
Jack Dempsey (aggressive) and Mystery Snail (peaceful) are far apart on aggression — bullying or injury is a common outcome in average community layouts.
Assessment details
Jack Dempsey may eat Mystery Snail
Top issueJack Dempsey (25cm) is predatory and Mystery Snail (5cm) is small enough to be eaten. This pairing is unsafe.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Jack Dempsey (25cm) is predatory and Mystery Snail (5cm) is…”
Jack Dempsey may eat Mystery Snail
Next steps
Concrete changes, not "research more" filler.
Try instead
- →Build a species-only tank for the larger fish, or restock with fish too large to be eaten at adult sizes.
- Seriously Fish. Rocio octofasciata
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Rocio octofasciata
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Rocio octofasciata
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- Aquarium Co-Op. Mystery Snail Care Guide
Primary: retailer care guide on tank size, calcium needs, breeding clutches, and the bridgesii-vs-canaliculata distinction.
- Applesnail.net. Pomacea bridgesii
Secondary: long-running hobby reference for apple snail biology, breeding, and species ID; useful for telling bridgesii from canaliculata.
Try this next
Build the full stocking list with Jack Dempsey + Mystery Snail
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 (Mystery Snail): Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.