Compatibility Report
GuideMyTank compatibility analysis for Crystal Red Shrimp and Upside-Down Catfish.
Planning verdict
incompatibleDo not plan a shared aquarium for this pair. Choose a different tank mate or maintain separate aquariums.
Crystal Red Shrimp and Upside-Down Catfish receive a not recommended verdict from the current structured assessment. Crystal Red Shrimp is recorded as peaceful with an aggression level of 1/10; Upside-Down Catfish 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.
Crystal Red Shrimp has a recorded temperature range of 68–76°F and pH range of 6–7.2. Upside-Down Catfish is recorded at 72–79°F and pH 6–7.5. Their shared planning window is 72–76°F for temperature and 6–7.2 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Upside-Down Catfish sets the larger listed base aquarium requirement at 30 gallons; the other listed minimum is 5 gallons. Upside-Down Catfish is the larger adult by the recorded maximum, reaching 4 inches, compared with 1.2 inches. These figures are starting constraints, not a stocking-capacity calculation, because the complete group sizes and bioload still matter.
Crystal Red Shrimp is a moderate species associated with the bottom zone and moderate flow. Upside-Down Catfish is moderate, uses the bottom zone, and has a moderate flow preference. Crystal Red Shrimp should be planned as a group of at least 10, while upside-down catfish should be planned as a group of at least 5. The aquarium must support both social structures without forcing either species into insufficient space.
Crystal Red Shrimp is recorded as a omnivore with advanced care, while Upside-Down Catfish is a omnivore with intermediate care. Their listed preferred tank styles are planted and planted. 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 Crystal Red Shrimp and Upside-Down Catfish.