Compatibility Report
GuideMyTank compatibility analysis for Bristlenose Pleco and Discus.
Planning verdict
incompatibleDo not plan a shared aquarium for this pair. Choose a different tank mate or maintain separate aquariums.
Bristlenose Pleco and Discus receive a not recommended verdict from the current structured assessment. Bristlenose Pleco is recorded as peaceful with an aggression level of 2/10; Discus 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.
Bristlenose Pleco has a recorded temperature range of 73–80°F and pH range of 6.5–7.8. Discus is recorded at 82–86°F and pH 4.5–6.5. Their shared planning window is no complete overlap in the recorded ranges for temperature and 6.5–6.5 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Discus sets the larger listed base aquarium requirement at 75 gallons; the other listed minimum is 20 gallons. Discus is the larger adult by the recorded maximum, reaching 8 inches, compared with 5 inches. These figures are starting constraints, not a stocking-capacity calculation, because the complete group sizes and bioload still matter.
Bristlenose Pleco is a moderate species associated with the cave zone and moderate flow. Discus is calm, uses the mid zone, and has a low flow preference. Bristlenose Pleco does not have a recorded minimum school larger than one, while discus should be planned as a group of at least 6. The aquarium must support both social structures without forcing either species into insufficient space.
Bristlenose Pleco is recorded as a herbivore with easy care, while Discus is a omnivore with advanced care. Their listed preferred tank styles are rockwork and blackwater. 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.
Do not plan a shared aquarium for this pair. Choose a different tank mate or maintain separate aquariums.
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 Bristlenose Pleco and Discus.