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.
Worm pipefish was created in 1835.
Dusky pipefish was created in 1882.
Darkflank pipefish was created in 1871.
Schultz's pipefish was created in 1953.
Ocellated pipefish was created in 1953.
Lesser pipefish was created in 1855.
Barred pipefish was created in 1882.