well most scietists are not quite sure but capelin are carnivores

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Mоява, pronounced 'moyva', is smoked/salted capelin in Russian. Salted capelin is generally 'grayer' in colour than the smoked one, which tends to be redder.

Large salmon species sometimes eat capelin, which is related to salmon. Other predators of capelin include seabirds, mackerel, cod, seals, squid and some whales.

shark