Not at this time -- to be completely honest, I don't think NeuraQuarium has enough users to support a private Discord server. Feel free to share anything neat you see in your sims here on the Community page!
EDIT: See the link below for the Discord server.
I think you underestimate the motivation of some people concerning those Alife projects! I mean, the discord doesn't have to be only for those who bought the game, but also for those who are interested. It would be more comfortable than using itch I think.
And if the user gets higher, you'll already have a discord set up!