[SOLVED] Bocourt’s Water Snake (Enhydris bocourti)

Am quite sure the ID Xenocrab mentioned is the correct one, Bocourt's Water Snake, Enhydris bocourti.
Maybe not the most handsome family of snakes, but this specific species has nice coloration.

According to Indraneil Das' book "Reptiles of South-east Asia" it is mildly venomous, but from what I've read not a real danger to humans.
Still, better not to get bitten.
Did it end up as 'Kapao Ngu' or was it released?

Yes Thais tend to take EVERYTHING they catch.
But at least they eat the whole animals, and not throw away too much.
Still, I've seen they usually respect snakes and if they know it is not dangerous, they'll let them go. Or even if it is dangerous but nowhere near their house/ children they usually don't kill without reason.
However, evolution gave quite a few harmless species similar coloration as highly venomous species. E.g. there is more than a handfull of harmless species that are much alike Blue Kraits, with black and white banding. It might help these snakes in the wild, but certainly not in areas where they live close to humans.
Some rat snakes look like cobras. One of the cat snake species is very much alike the Russell's Viper. Every green snake is thought to be a green pit viper.
All these snakes won't live long if encountered by people in their houses or gardens. In a way understandable, but maybe better education could help save some.