Gray tree frog tapole identification

[jalbers]

Hello,

I posted last week about some tadpoles I am having trouble identifying. I have attached several pictures. Any help would be greatly appreciated. The specimens in the photos were collected mid-June and early July of this year. I am from Minnesota and cannot figure out how to tell early-stage tree frogs from spring peepers. Do early-stage tree frogs lack the heavy pigment that is found in the later stages of tree frogs? Or do tree frogs have this characteristic throughout? The first picture indicates what I think is a spring peeper. It already has bud formation and lacks the heavy pigment. It was collected in June. The second and third pictures are of tadpoles also collected in June with the top tadpole zoomed in for tail fin detail. Same goes for the third and fourth picture. All were collected mid-June. I wanted to add more of tadpoles collected in July but in general, they are even smaller than those depicted here and were collected in July. So that makes me think that all of these are tree frogs except for the first image.

[John]

Bit confused about which photo is which, but the 4th photo is definitely a Gray Tree Frog.

[BG]

I'm confused my self .Only one looks like a diffrent frog. Time will tell.

[jalbers]

The 1st-3rd pictures are on the top row. 4th-6th pictures are on the second row. It would be great if the first picture was a different frog. I think it is a spring peeper but believe that the other tadpoles are tree frogs.