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Yes, a pipefish is in fact a fish. They are part of the order syngnathiformes, which contains seahorses, pipefish and seadragons.
Straightnose pipefish was created in 1758.
a pipefish is an invertebrate, it has no back bone
Broadnosed pipefish was created in 1758.
Spotted pipefish was created in 1810.