noun, plural (especially collectively) pipefish (especially referring to two or more kinds or species) pipefishes.
any elongated, marine and sometimes freshwater fish species of the family Syngnathidae, having a tubular snout and covered with bony plates.

1760–70; pipe1 + fish

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World English Dictionary
pipefish (ˈpaɪpˌfɪʃ)
n , pl -fish, -fishes
Also called: needlefish any of various teleost fishes of the genera Nerophis, Syngnathus, etc, having a long tubelike snout and an elongated body covered with bony plates: family Syngnathidae

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Encyclopedia Britannica


any of more than 150 species of elongated fishes allied to the sea horses, in the family Syngnathidae (order Gasterosteiformes). Pipefishes are very slender, long-bodied fishes covered, like sea horses, with rings of bony armour. They have long, tubular snouts and small mouths, a single dorsal fin, and, usually, a small tail fin. Depending on the species, they may range in length from about 2.5 to 50 cm (1 to 20 inches)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
They verified their results with high-speed video of seahorses and pipefish feeding.
When it comes to mating, pipefish males are always waiting for something better-and bigger-to come along, a new study shows.
If you are lucky, and look closely you may see an occasional seahorse or pipefish.
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