I only just get some guppy fish i considered necessary to know could i nurture them Wardley Essentials Tropical Fish food?

Answers: as long as its high contained by protein then its fine, tetra is a polite brand.
and small enough for the fish to swallow (if not a flake food)

You can and they'll be fine. Next time you're purchasing food look for Livebearer food. It have a better balance for them.

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