Came home from work to find him dead on the bottom of the tank, no signs of being picked on or stressed, maybe looking a little bloated but he did eat a decent meal of shrimp last night. 470mm/18.5", didn't weigh him.
I'm a bit gutted as it just seems so random, thats life I guess.
BTW I didn't name him, the guy I bought him off about a year ago did!!