The myomeres bend the spine, and hence the body, when they contract, allowing the body to push against the water.
Most fish are predators, actively hunting.
Others are filter feeders that can use the the gill rakers off of the gill arches to direct food inward. 1 Fish have a stomach for storage of large, infrequent meals. The intestine has outpocketings or pyloric ceca in some bony fish. Pancreas, liver, and gallbladder are additional digestive organs. Most fish pump water over the gills with pharyngeal and opercular muscles.