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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.
a pipefish is an invertebrate, it has no back bone
Ocellated pipefish was created in 1953.
Barred pipefish was created in 1882.
Worm pipefish was created in 1835.
Banded pipefish was created in 1853.
Bay pipefish was created in 1854.
Pelagic pipefish was created in 1827.
Northern pipefish was created in 1839.
Dusky pipefish was created in 1882.
Straightnose pipefish was created in 1758.
Darkflank pipefish was created in 1871.