Not really recent but I was wondering why I was seeing some different forms of Sundadanio axelrodi avaliable like red, blue, green and come to find out there are actually 7 newly described species as of 2011 and the link to the PDF is
http://www.pfeil-verlag.de/04biol/pdf/ief22_3_08.pdf
I’m sure some people knew this and the species updates are just slow but just wanted to remind everyone of this super small cool and endangered fish.