Compatibility Report
GuideMyTank compatibility analysis for Clown Killifish and Ember Tetra.
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.
No additional conditional requirements were identified.
Clown Killifish and Ember Tetra receive a recommended verdict from the current structured assessment. Clown Killifish is recorded as peaceful with an aggression level of 1/10; Ember Tetra is recorded as peaceful with an aggression level of 1/10. 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. Ember Tetra is recorded at 72–82°F and pH 5.5–7.2. Their shared planning window is 72–79°F for temperature and 5.5–7 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Ember Tetra sets the larger listed base aquarium requirement at 10 gallons; the other listed minimum is 5 gallons. Clown Killifish is the larger adult by the recorded maximum, reaching 1.4 inches, compared with 1 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. Ember Tetra is moderate, uses the mid zone, and has a moderate flow preference. Clown Killifish should be planned as a group of at least 6, while ember tetra should be planned as a group of at least 8. 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 Ember Tetra is a omnivore with easy care. Their listed preferred tank styles are blackwater 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.
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 Clown Killifish and Ember Tetra.