Image: Marlin dorsal fin spine

Marlin dorsal fin spine

A 21 cm long Marlin dorsal fin spine was brought to the Australian Museum for identification by Mario Ulliana, who found it at Bawley Point, on the southern coast of New South Wales (AMS I.39055-001).

Stuart Humphreys
© Australian Museum


It is not possible to be 100% certain, but it is highly likely that the spine is one of the dorsal fin spines of a large billfish such as a Marlin.

Fish Section staff compared the spine with the dorsal fin spines of the 190 cm long Marlin skeleton in the Australian Museum Skeleton Gallery. They were almost identical.


  1. Hutchins, B. & R. Swainston. 1986. Sea Fishes of Southern Australia. Complete Field Guide for Anglers and Divers. Swainston Publishing. Pp. 180.
  2. Nakamura, I. 1985. FAO Species Catalogue. An Annotated and Illustrated Catalogue of Marlins, Sailfishes, Spearfishes and Swordfishes known to Date. Vol. 5. Billfishes of the World. FAO Fisheries Synopsis No. 125 5: 1-65.
  3. Randall, J.E., Allen, G.R & R.C. Steene. 1997. Fishes of the Great Barrier Reef and Coral Sea. Edition 2. Crawford House Publishing. Pp. 557.

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Tags Fishes, Ichthyology, Marlin dorsal fin spine, Makaira indica, Black Marlin, Istiophoridae,