Thanks for the coments and questions.
@ Joni: They are almost adult, all between 50 and 60 cm. Who would not like to breed them, once you find 2 couples;-) The male is only green. BTW one week after arriving home i put one couple together, and caught them in the act 2 days later. But i deleted the chip in the camera without saving the pictures!
Greetings
Rene