Roundscale spearfish

Roundscale spearfish
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Istiophoridae
Genus: Tetrapturus
Species: T. georgii
Binomial name
Tetrapturus georgii
R. T. Lowe, 1841

The roundscale spearfish (Tetrapturus georgii) is a species of marlin native to the eastern Atlantic Ocean from Portugal to Madeira, the Canary Islands to northern Africa and the western Mediterranean Sea to Sicily. It is suspected that it may be more widespread. It is believed to inhabit open waters. This species can reach a length of 184 centimetres (72 in) FL and the heaviest recorded fish weighed in at 21.5 kilograms (47 lb).[2]


  1. Collette, B., Amorim, A.F., Boustany, A., Carpenter, K.E., de Oliveira Leite Jr., N., Fox, W., Fredou, F.L., Graves, J., Viera Hazin, F.H., Juan Jorda, M., Minte Vera, C., Miyabe, N., Nelson, R., Oxenford, H., Teixeira Lessa, R.P. & Pires Ferreira Travassos, P.E. 2011. Tetrapturus georgii. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <>. Downloaded on 19 October 2013.
  2. Froese, Rainer and Pauly, Daniel, eds. (2013). "Tetrapturus georgii" in FishBase. August 2013 version.
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