
1) Bottom fish 2) Food fish
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https://www.crosswordclues.com/clue/groundfish

fish that lives most of its life on or near the sea bottom, such as cod, haddock, or flounder.
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http://en.wikipedia.org/wiki/Glossary_of_fishery_terms

Groundfish are fish that live on, in, or near the bottom of the body of water they inhabit. Some typical saltwater groundfish species are cod, flounder, halibut, and sole. Related terms used in different contexts include `demersal fish` and `whitefish`, and (more broadly) `bottom feeder` . ==Regulations in the United States== Saltwater groun...
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http://en.wikipedia.org/wiki/Groundfish

(from the article `Newfoundland and Labrador`) ...the West Indies, and Brazil has virtually disappeared since the 1940s. It was replaced, over time, by a technologically advanced and ...
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http://www.britannica.com/eb/a-z/g/74

Broadly, fish that are caught on or near the sea floor. The term includes a wide variety of bottomfishes, rockfishes, and flatfishes. However, the National Marine Fisheries Service sometimes uses the term in a narrower sense. The term usually applies to cod, cusk, haddock, hake, pollock and Atlantic ocean perch.
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http://www.encyclo.co.uk/local/22281

fish that lives most of its life on or near the sea bottom, such as cod, haddock, or flounder.
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http://www.translationdirectory.com/glossaries/glossary245.php

[
n] - fish that live on the sea bottom especially commercially important gadoid fishes like cod and haddock or flatfish like flounder
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http://www.webdictionary.co.uk/definition.php?query=groundfish
bottom fish noun fish that live on the sea bottom (particularly the commercially important gadoid fishes like cod and haddock or flatfish like flounder)
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https://www.encyclo.co.uk/local/20974
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