I wanted to put some giant danios in the 125, but it was going to be too much activity for the pearls-plus the pearls don't like so much current. Since I want to keep the pearls as the biggest fish, and will have some espies in the tank, I was considering a big school of the d. tinwini as well. Thanks for reminding me of how beautiful they are. Will have to add them to my list for the 125, I like them more than the zebra danios.