I sale E. plumbea male or exchange for another snake

Hello, I am offering for sale or exchange my male water snake (Enhydris plumbea), as I would like to deal with snakes that eat rodents or chickens. The male has never bitten, he hesitates at most during handling, but he is not biting and does not hiss in any way. It is used to smaller fish such as tetras and others. He also takes pieces of fish meat, but always eats 100% of live fish. Regarding breeding, he only needs a room in the size of 50x30x30, he himself is currently 30 cm, he can grow up to 50 cm. Either it can be kept purely in water with a water column of max. 5 cm with a piece of wood, or with 1/3 dry surface and 2/3 water. It has similar teeth to the nosed heterodon, so it is harmless to humans. He is originally from Indonesia, but he has been in captivity for over half a year, of which 4 months were with me, and during that time he was without any problems, he had 3 coats and they were always whole. I will gladly exchange it for a snake that eats rodents or chickens, does not bite and is used to handling (NOT invasive species) or I will keep it for 800 CZK. Only in person in Prague or Písek in South Bohemia, I DO NOT RESERVE and do not send.