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least killifish (Heterandria formosa) The Least killifish is one of the smallest livebearing fish in the world-and a fascinating native species to keep. Reaching just under an inch in length, this peaceful mirco fish is ideal for nano aquariums, planted tanks, and blackwater setups. Males are smaller and more slender while females can grow slightly larger and show subtle vertical banding. Hardy, active, and of charm, these little fish are perfect for hobbies.Looking to keep something rare and truly miniature.
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🇺🇸 Ship from USA · On Agora since 2026
$30.00