Alosa "oligorakered." The multirakered are primarily plankton feeders, the oligorakered have large rakers and are predators, and the medium-rakered generally consume a mixed diet. Most current species of the genus "Alosa" in North America can be found in Florida, whereas the distribution of most of them is broader. Morphology is notoriously liable to adapt to changing food availability in these fish. Several taxa seem to have evolved quite recently, making molecular analyses difficult. In addition, hybridization may be a factor in shad phylogeny. Nonetheless, some trends are emerging. The North American species except the American shad "A. sapidissima" can probably be
Malden River They can be caught from the Malden River with simple food baits—such as corn or bread—on the bottom of the river. Another fish is the alewife and its cousin, the blueback herring, collectively known as river herring or simply herring. Both migrate from the ocean into the fresh water of the Malden River every spring to spawn. Striped bass, a prized saltwater fish, also come in from the ocean to spawn and prey on the herring. Other fish, like bluegill, largemouth bass, and catfish, are less common. The Native Americans and settlers used the Malden River for recreation and commercial