Is this a Field Frog?

I found this frog in a pond with my friend in a park beside Jurong Point one sunny afternoon. If you zoom into the picture, you can see the frog and you will be able to notice the Black & White stripe on its mouth. I believe that it is a Field Frog, Fejervarya limnocharis. I saw many of these jump into the water from the ground, but I did not manage to get a good look at it. This was the best picture I have. I could here their calls at that time.

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So, Is it a Field Frog?