Then it metamorphoses into a miniature clownfish less than half an inch long that descends to the reef. If the young fish doesn't find an anemone and acclimatize to its new life within a day or ...

You may need to sit down for this, but Disney lied to you in Finding Nemo: clownfish do not care for their young after hatching, let alone show the overprotectiveness Marlin demonstrates in the film.