What does the cryptic crossword clue "Frogs, say — or toads, worms and rats? (4,4)" mean?

The definition is "Frogs, say". The wordplay uses a double definition. Double definition The answer is PONDLIFE.

Frogs, say — or toads, worms and rats? (4,4)

Guardian Cryptic #29116 | 4 Down | 2023-07-07 flower