How many Leopard Geckos can fit in a 20 Gallon Long Tank?
1 adult leopard gecko in a 20 gallon long tank. Leopard gecko are solitary and do best alone. You could probably have 2 babies in that tank but you will have to separate them when they are older. Males will fight, male and female will breed. Female generally do ok but a 20 gallon is not big enough for 2 adults.