Alien Turtle ID

[Mario Schweiger]

Yes, Graptemys for sure
But I tend more to the typical kohnii x pseudogeographica hybid, which are most bred in turtle farms in the US.

[Ilian Velikov]

Graptemys no doubt, but hard to tell which species, especially with those hybrids and the worn down shell. Could be nigrinoda as well by the pattern on the head. If you can take a photo of the chin/throat it might give you some clues.

[Paul Bachhausen]

Yes, Graptemys for sure
But I tend more to the typical kohnii x pseudogeographica hybid, which are most bred in turtle farms in the US.

... pseudogeographica maybe - but kohnii I don't think!
Why should it be a hybrid?
Paul

[Ilian Velikov]

Currently, the small river is maybe 5-6m wide and at the point about 2m deep. It would be a hard catch for sure.

Did you mean catching the turtle? You don't have to do that to photograph the throat, you just need a bit of luck or a different vantage point. Like this:

Why should it be a hybrid?

Yes, good question...

[Ilian Velikov]

Another "local" expert on Graptemys voted for pseudogeographica.

"Your" animal looks very similar to this http://lh4.ggpht.com/_1ue-oALCAlw/S-ZHt25GRsI/AAAAAAAAJrc/Y2hb_wThMKo/s800/IMG_2142.JPG which is pseudogeographica (this one a male though as opposed to the female of your photos) and its features match this chart http://s172.photobucket.com/user/Razorclaw1973/media/overig/Graprecog.jpg.html.

So I would agree with the local expert.

[Ilian Velikov]

Yes, you have a point. Well, we'll never know for sure I guess.