No interactions present.
How do you tell the difference between the spawn of Common Frog and that of the other (introduced?) frog species in Britain?
They are pretty similar, but the Pelophylax frogs' spawn is slightly more brownish. However, if you can consider the location, habitat type and the timing you should be able to tell them apart.
I've wondered about that for some time now. Not much chance of anything other than Common Frog on my local sites but I'm very reluctant to ID just based on geographic factors as things can spread.
Lat/Lng: 51.585, -3.1357
OS grid ref: ST214879