 Winter flounder can be differentiated from the commonly co-occurring Summer flounder (Paralichthys dentatus) by their small teeth and eyes nearly always positioned on the right side of their bodies.Meanwhile, Summer flounder have their eyes on the left side of their bodies and possess large, conspicuous teeth.Larval Winter flounder are known to feed on nauplii, harpacticoids, calanoids, polychaetes, invertebrate eggs, and phytoplankton.