Beloved to all Puerto Ricans, a tiny coqui treefrog peeks from a rain-soaked canario flower, also known as Allamandra, yellow bell, or golden trumpet flower, an ornamental native to South and Central America. Eleutherodactylus coqui. Unfortunately this frog was accidentally introduced to Hawaii, where it has multiplied to population levels unknown in Puerto Rico and stands as a threat to the welfare of endemic Hawaiian wildlife. Its shrill call is also annoying to residents and tourists seeking peaceful nights in Hawaii. San Juan, Puerto Rico. Photographed under controlled conditions