How do fish eat?-Experiment

Depending on what a fish eat, the mouth has adapted in a different way. A parrotfish eats algae attached to coral or rock, a goatfish shifts through the sand with its whiskers to pick up small invertebrates, while the butterflyfish has a long mouth to pick at invertebrates in between the coral. Students try to pick up ('eat') all the different food items. They find out that each food item is easiest to pick up with a different utensil ('mouth').

A video can be downloaded from the website at lesson 3 (see Reference Material).