Compatibility brief
Can Jack Dempsey live with Tiger Barb?
Risky. This mix is commonly discouraged for typical setups.
Compatibility score
Profile confidence: medium
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 Tiger Barb (about 7cm) once grown. Plan around adult sizes, not shop sizes.
Temperament gap (aggressive vs semi-aggressive) adds stress on top of the hard incompatibility — space and cover do not make this pairing safe.
Assessment details
Temperament difference
Jack Dempsey is aggressive, while Tiger Barb is semi-aggressive. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.
Jack Dempsey may eat Tiger Barb
Top issueJack Dempsey (25cm) is predatory and Tiger Barb (7cm) 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 Tiger Barb (7cm) is…”
Jack Dempsey may eat Tiger Barb
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Tiger Barb can escape if harassed.
- •Tiger Barb should be kept in a group of at least 8 for best health and behaviour.
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.
- Seriously Fish. Puntigrus tetrazona
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Puntigrus tetrazona
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Puntigrus tetrazona
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
Try this next
Build the full stocking list with Jack Dempsey + Tiger Barb
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.