Compatibility Report
GuideMyTank compatibility analysis for Clown Killifish and Convict Cichlid.
Planning verdict
incompatibleDo not plan a shared aquarium for this pair. Choose a different tank mate or maintain separate aquariums.
Clown Killifish and Convict Cichlid receive a not recommended verdict from the current structured assessment. Clown Killifish is recorded as peaceful with an aggression level of 1/10; Convict Cichlid is recorded as aggressive with an aggression level of 8/10. The recommendation is based on the combined water, space, behavior, grouping, and predation checks below rather than on species names alone.
Clown Killifish has a recorded temperature range of 68–79°F and pH range of 5–7. Convict Cichlid is recorded at 75–82°F and pH 6.6–7.8. Their shared planning window is 75–79°F for temperature and 6.6–7 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Convict Cichlid sets the larger listed base aquarium requirement at 30 gallons; the other listed minimum is 5 gallons. Convict Cichlid is the larger adult by the recorded maximum, reaching 6 inches, compared with 1.4 inches. These figures are starting constraints, not a stocking-capacity calculation, because the complete group sizes and bioload still matter.
Clown Killifish is a calm species associated with the top zone and moderate flow. Convict Cichlid is moderate, uses the cave zone, and has a moderate flow preference. Clown Killifish should be planned as a group of at least 6, while convict cichlid should be planned as a group of at least 2. The aquarium must support both social structures without forcing either species into insufficient space.
Clown Killifish is recorded as a carnivore with intermediate care, while Convict Cichlid is a omnivore with intermediate care. Their listed preferred tank styles are blackwater and rockwork. 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 Clown Killifish and Convict Cichlid.