IPv6 Prefix announcing

Greetings NANOG, I've always been under the impression its best practice to only announce prefixes of a /24 and above when it comes to IPv4 and BGP. I was wondering if something similar had been agreed upon regarding IPv6. And if That's the case, What's the magic number? /32? /48? /64? Nick Olsen Network Operations (855) FLSPEED x106