These eat phytoplankton and drift with the currents.

Phytoplankton is at the bottom of some food chains, while zooplankton and other organisms eat phytoplankton.

It was previously thought that anchoveta ate mostly phytoplankton, small zooplankton, and larvae.

It is known to eat detritus, bacteria, phytoplankton, diatoms, and algae.

By the calyptopsis stages differentiation has progressed far enough for them to develop a mouth and a digestive tract, and they begin to eat phytoplankton.

Because flame scallops have no photosynthetic properties, the herbivorous flame scallops eat only phytoplankton.

The larval bigmouth are benthic feeders of copepods and cladocerans mostly but also eat phytoplankton and chironomids.

During the planktonic phase of life they eat single-celled phytoplankton.

They eat phytoplankton and disperse with the current for 2 to 3 weeks.

Menhaden primarily eat phytoplankton (microscopic plants); although, since they are omnivorous, they take in a small portion of zooplankton (microscopic animals).