Frog larva (7)

I believe the answer is:
tadpole
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">frog larva</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tadpole that I've seen before include "being hatched in a puddle?" , "Aquatic larva of frog or toad" , "Amphibian larva" , "Young frog" , "Baby amphibian" .)