Spotted estuary smooth-hound

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Spotted estuary smooth-hound
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Selachimorpha
Order: Carcharhiniformes
Family: Triakidae
Genus: Mustelus
Species: M. lenticulatus
Binomial name
Mustelus lenticulatus
Phillipps, 1932
Mustelus lenticulatus distmap.png

The spotted estuary smooth-hound or rig (Mustelus lenticulatus) is a houndshark of the family Triakidae, found on the continental shelves and in estuaries around New Zealand. It is closely related to the gummy shark (Mustelus antarcticus) of Australia.[1] Males can grow up to a length of 125 cm, while females can reach a length of 151 cm.

It is commercially fished, and is commonly served in fish and chip shops in New Zealand under the name lemonfish.[citation needed]


  1. ^ Gardner, M.G.; Ward, R.D. (2002). "Taxonomic affinities within Australian and New Zealand Mustelus sharks (Chondrichthyes: Triakidae) inferred from allozymes, mitochondrial DNA and precaudal vertebrae counts". Copeia (BioOne) 2002 (2): 356–363. doi:10.1643/0045-8511(2002)002[0356:TAWAAN]2.0.CO;2. Retrieved 12 January 2015.