Rescued a WTF!

[Mushrooms]

So I never intended to get tree frogs (a pacman had been my intended next phib addition) but I couldn't leave this one where it was. A person i know, who is an animal hoarder. Took two young WTF from someone who was mistreating them. Yesterday they asked if i would take them, and knowing that although they mean well they often cause more suffering than needs be agreed.

I went to collect the frogs today, I was told that she couldn't find the second one. So i opened the viv and i saw number two, straight away dead at the bottom of their (dry) water bowl. And rather crispy. They had also been put into one of those exo terra nano tanks, with a fake plant on the floor to small to climb in and not even a background for a bit of interest. This tiny tank also has a huge heat/sunlight lamp in the hood too, am i right in presuming that a heat mat like most frogs is the preferred way to heat?

So needless to say i now have a 1 1/2 inch long Whites next to my bed. It's really odd compared to the firebellies! But very cute and I love it's color. I have an old fish tank in the shed, which should be ok for a little while (certainly better than the nano) and will only cost me about £8.00 for convert by putting a mesh on the lid and will give me the room to put some branches and live plants in for it, until i can afford a big tank. I have said (to keep my mother sweet) that I will re-home it to a tree froggy home but im hoping eventually it will become part of the furniture so to speak and it can stay, and get it a companion am i right in believing they are a communal species?

Here are come pics, does it's general condition look ok? I thought maybe a bit skinny but i'm aware it's only young and it's shape is very different from the FBT's. I apologies for the mold in the substrate, it's been picked out now.