What's the difference between cutlassfish and hairtail?

Cutlassfish

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Definition:

Example Sentences:

Hairtail

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Definition:

• (n.) Any species of marine fishes of the genus Trichiurus; esp., T. lepterus of Europe and America. They are long and like a band, with a slender, pointed tail. Called also bladefish.

Example Sentences:

• (1) He was admitted this time for an attack after eating food prepared with leftover oil used for frying hairtail.
• (2) The camera hones in on plates of mostly-eaten fish – poisonous pufferfish, long-tailed anchovy and largehead hairtail, according to onlookers – as well as top-shelf bottles of Chinese rice liquor and Australian Yellowtail wine .