
Originally Posted by
DonLisk
You purchased some very bold and active PDFs. You will find they will use all the tank whether a 20 gallon or a 40 gallon.
They are a great frog and provide a never ending amount of visual activity.
As for one hiding, could be the shy one of the group or is intimidated by the others. Just keep and eye on this one and ensure it is not being bullied and is getting to eat. 2.1 is a good number for a group and you really only want one female in the tank. If you have two females split them up into pairs in separate tanks :-)
PDFs will eat more flies over a day than you can imagine. If there isn't enough, they will feed on sprintails if you seeded the substrate before adding the frogs.