But soon after the area began to recover, he noticed large numbers of Japanese tree frogs (Buergeria japonicus) as well as a few Moltrecht's tree frogs (Rhacophorus moltrechti) and brown tree frogs (Polypedates megacephalus). Estimating there were more than 200 frogs on the 1.5-hectare farm, he was inspired to launch a reintroduction project.
然而，環境才改善沒多久，許瑞明發現日本樹蛙大量出現，加上少數的莫氏樹蛙、白頷樹蛙，在 1.5 公頃的農場中，算算竟有兩百多隻，讓他感動的不得了，許瑞明於是開始走上復育青蛙之路。