Yes indeed, thank you! Gaston is so happy with his big 5 gallon home that I can't bear to have to split it permanently, so I got another 5 gallon to put Alaric in. But they'll have to share for a couple of days while I run the filter on one tank for a day to get it warmed up, and then the other one. Still figuring out where I'm going to put two 5 gallon tanks haha but I'll make it work. This is a much cheaper alternative for a temporary divider!
Also Canvas, I found this website that gives an idea of how big fry are: http://www.bettatalk.com/fry_growth.htm
could possibly give you a better idea :)
(Hope it's Kosher that I posted that link since it's from another betta site, sorry if it's not!)