Compatibility Report
GuideMyTank compatibility analysis for Congo Tetra and Golden Wonder Killifish.
Planning verdict
compatibleThis pair is a reasonable starting point when both species receive their required tank size, group size, water conditions, and routine care.
No automatic safety blocker was found.
Congo Tetra and Golden Wonder Killifish receive a recommended verdict from the current structured assessment. Congo Tetra is recorded as peaceful with an aggression level of 1/10; Golden Wonder Killifish is recorded as semi-aggressive with an aggression level of 4/10. The recommendation is based on the combined water, space, behavior, grouping, and predation checks below rather than on species names alone.
Congo Tetra has a recorded temperature range of 75–82°F and pH range of 6–7.5. Golden Wonder Killifish is recorded at 72–82°F and pH 6.5–7.5. Their shared planning window is 75–82°F for temperature and 6.5–7.5 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Congo Tetra sets the larger listed base aquarium requirement at 40 gallons; the other listed minimum is 20 gallons. Golden Wonder Killifish is the larger adult by the recorded maximum, reaching 4 inches, compared with 3.5 inches. These figures are starting constraints, not a stocking-capacity calculation, because the complete group sizes and bioload still matter.
Congo Tetra is a active species associated with the mid zone and moderate flow. Golden Wonder Killifish is moderate, uses the top zone, and has a moderate flow preference. Congo Tetra should be planned as a group of at least 6, while golden wonder killifish does not have a recorded minimum school larger than one. The aquarium must support both social structures without forcing either species into insufficient space.
Congo Tetra is recorded as a omnivore with intermediate care, while Golden Wonder Killifish is a carnivore with intermediate care. Their listed preferred tank styles are planted and predator. 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.
This pair is a reasonable starting point when both species receive their required tank size, group size, water conditions, and routine care.
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 Congo Tetra and Golden Wonder Killifish.