Hi Teresa.Yes,sorry to have to confirm it but Doris is absolutely right.It is toad spawn,i'm afraid.Are you sure that the half eaten frog wasn't a toad that could not escape? not fair to kep it in a bucket as when they hatch they will need a lot of food.A few maybe ok but toad tadploes are very different to frogs and VERY carnivorous.they will eat each other in no time.See if you can find a wildlife pond for them.
Newt eggs are laid singly and you would struggle to find them.In any case newts would not survive in a deep fish pond.