Question

I have a question about a certain idea I saw. Is it possible to explain the plague of frogs in natural terms as a result of the plague of blood? After all, if all the fish died in the plague of blood, the ecological balance would have been disrupted and there would have been nothing to eat the frogs’ eggs, causing them to multiply greatly. And is this connected to the duration of the plagues? In most of the plagues, neither the timing nor the duration is specified, but after the plague of blood it says, "And seven days were completed."