Three-day-old embryos of red-eyed treefrog species Agalychnis callidryas (A. callidryas)
Scientists in Hiroshima have bred these see-through frogs to cut down on future dissections :’)
Actually this one hasn’t been bred in a lab. In fact, there’s a whole load of frogs with naturally transparent skin. The most notable being the glass frog family Centrolenidae and the Madagascan skeleton frog genus Boophis. The tadpole stage of many other frog and toad species will have translucent skin too.
The species pictured here is the powdered glass frog (Cochranella pulverata).
You’re not entirely wrong though: Japanese scientists did managed to produce a transparent frog by combining two recessive genes that cause pale skin in frogs, but this was achieved with the Japanese brown frog (Rana japonica) a close relative of the common frog (Rana temporaria).