Compatibility Report
GuideMyTank compatibility analysis for Oscar and Rosy Barb.
Planning verdict
cautionOnly plan this pair if every listed condition can be met, and have a separation plan if stress or aggression appears.
No automatic safety blocker was found.
Oscar and Rosy Barb receive a conditional verdict from the current structured assessment. Oscar is recorded as aggressive with an aggression level of 6/10; Rosy Barb is recorded as peaceful with an aggression level of 2/10. The recommendation is based on the combined water, space, behavior, grouping, and predation checks below rather than on species names alone.
Oscar has a recorded temperature range of 74–81°F and pH range of 6–7.5. Rosy Barb is recorded at 64–79°F and pH 6–8. Their shared planning window is 74–79°F for temperature and 6–7.5 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Oscar sets the larger listed base aquarium requirement at 75 gallons; the other listed minimum is 30 gallons. Oscar is the larger adult by the recorded maximum, reaching 14 inches, compared with 5 inches. These figures are starting constraints, not a stocking-capacity calculation, because the complete group sizes and bioload still matter.
Oscar is a moderate species associated with the mid zone and moderate flow. Rosy Barb is active, uses the mid zone, and has a moderate flow preference. Oscar does not have a recorded minimum school larger than one, while rosy barb should be planned as a group of at least 6. The aquarium must support both social structures without forcing either species into insufficient space.
Oscar is recorded as a carnivore with intermediate care, while Rosy Barb is a omnivore with easy care. Their listed preferred tank styles are predator and community. Feeding access, cover, open swimming room, filtration, and observation should be planned around the more demanding requirement rather than averaged between the two species.
Use these pair-specific boundaries before treating the verdict as an acceptable stocking plan.
Only plan this pair if every listed condition can be met, and have a separation plan if stress or aggression appears.
These references support the underlying species records used by this assessment. They do not necessarily evaluate this exact pair together.
Continue with the most relevant care and compatibility resources for Oscar and Rosy Barb.