A small deep-sea fish found in the Atlantic Ocean, valued for its oil and as food.
From Spanish cachucho, possibly derived from Basque or other Iberian languages. The word entered English through maritime trade terminology in the 18th-19th centuries when European fishing expanded into Atlantic waters.
The cachucho was so commercially important to Spanish and Portuguese fishermen that the word became standardized in English scientific literature before many common fish names. It's one of those trade-specific words that reveals historical commerce patterns.
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