Compatibility of Fish?

The frog is going to be a problem, if it is a single male Betta, he may try and antagonize the other fish but the tetras should be fast enough to avoid him, with the guppy's keep in consideration that elaborate finnage will be a target for the Betta, so choose a less flashy variety of guppy. the snails are usually fine with anything. other than the frog the tank mates you have chosen should work well together, I'm sure it will be a very pretty tank