Compatibility Report
GuideMyTank compatibility analysis for Least Killifish and Silver Dollar.
Planning verdict
cautionOnly plan this pair if every listed condition can be met, and have a separation plan if stress or aggression appears.
No automatic safety blocker was found.
Least Killifish and Silver Dollar receive a conditional verdict from the current structured assessment. Least Killifish is recorded as peaceful with an aggression level of 1/10; Silver Dollar 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.
Least Killifish has a recorded temperature range of 68–78°F and pH range of 6.5–8. Silver Dollar is recorded at 75–82°F and pH 5–7. Their shared planning window is 75–78°F for temperature and 6.5–7 for pH. A shared aquarium must stay inside the overlap rather than merely touching each species’ outer tolerance.
Silver Dollar sets the larger listed base aquarium requirement at 75 gallons; the other listed minimum is 5 gallons. Silver Dollar is the larger adult by the recorded maximum, reaching 6 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.
Least Killifish is a moderate species associated with the top zone and moderate flow. Silver Dollar is active, uses the mid zone, and has a moderate flow preference. Least Killifish should be planned as a group of at least 6, while silver dollar should be planned as a group of at least 6. The aquarium must support both social structures without forcing either species into insufficient space.
Least Killifish is recorded as a omnivore with intermediate care, while Silver Dollar is a herbivore with intermediate care. Their listed preferred tank styles are planted and community. 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.
Only plan this pair if every listed condition can be met, and have a separation plan if stress or aggression appears.
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 Least Killifish and Silver Dollar.