saltwater fish
US /ˈsɔːltwɑːtər fɪʃ/
UK /ˈsɔːltwɑːtər fɪʃ/

1.
pez de agua salada, pescado de mar
fish that live in ocean water, as opposed to freshwater
:
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Many popular seafood dishes are made from saltwater fish.
Muchos platos populares de mariscos se hacen con pescado de agua salada.
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The aquarium specializes in tropical saltwater fish.
El acuario se especializa en peces de agua salada tropicales.