is a small and quite streamlined tuna. It is the only tuna
with longitudinal stripes on its back. The skipjack tuna
has longitudinal lines, but they are on the belly rather
than the back. The back and upper sides are steel-blue.
Atlantic bonito are relentless predators from the time they
hatch. Adults eat all types of fish, including herrings,
menhaden, hake, mackerels, anchovies, as well as shrimp and
squid. They are known to live at least 9 years, but are
not large fish. They typically reach sexual maturity at
age 2. Spawning takes place in the early summer. On the
Atlantic coast, where they are more common, Atlantic bonito
form large schools, often mixed with bluefish and mackerel.