I ended up buying these frogs, I agree that they shouldn't all be in the same terrarium, but on average they're about 1-3 cm long.. am keeping them quarantined, then will split them between Froakie's terrarium/ tank also there ended up only being 6! The seller miscounted.

The seller obviously had no experience with frogs (haha, here I am saying that... I've barely had any) and was going off "pet shop advice".

I'm trying my best now to make these frogs healthy and happy

EmJay, I don't suppose in the future you'd be interested in possibly taking on one or two of the newcomers? I bought the frogs with the intention of keeping a few as companions, and onselling the rest as I'm already finding looking after 7 frogs difficult!