common fangtooth
... that juvenile and adult common fangtooth look so unlike each other that at one time they were thought to be different species?
... that juvenile and adult <b id="mwAWY"><a href="./Anoplogaster_cornuta" id="mwAWc" rel="mw:WikiLink" title="Anoplogaster cornuta">common fangtooth</a></b> <i id="mwAWg">(adult pictured)</i> look so unlike each other that at one time they were thought to be different species?