How to change dafault shell for Linux susbsystem for WIndows

I've installed Linux subsystem for Windows 10 it works fine , but I want change default shell environment for the subsystem. I did " sudo apt-get install fish " and then " chsh -s /usr/bin/fish " But when I starts bash.exe in windows it always starts the bash.( I think it is predictable) Does anyone know arguments to change this behavior? Thank you