Bullrout

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Bullrout
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclass: Osteichthyes
Class: Actinopterygii
Subclass: Neopterygii
Order: Scorpaeniformes[1]
Family: Tetrarogidae
Genus: Notesthes
J. D. Ogilby, 1903
Species: N. robusta
Binomial name
Notesthes robusta
(Günther, 1860)

The bullrout (Notesthes robusta)[2][3] also commonly called freshwater stonefish or kroki, is a pale yellowish to dark-brown coloured fish that lives in tidal estuaries and slow-flowing streams in eastern Australia, from Southern New South Wales to northern Queensland, Australia.[4] It has on a very infrequent occurrence been caught at sea. Its spines are venomous. It is the only member of the genus Notesthes.

Description[edit]

The bullrout has a large head, and seven spines on the operculum. It has a big mouth with a protruding lower jaw. The spinous dorsal fin is slightly concave posteriorly and the last soft dorsal ray is attached by a membrane to the caudal peduncle. The body is covered with small scales, but the head is scaleless. Its colouration is variable from pale yellowish to dark brown, with blotches and marbling of dark brown, red-brown, grey, or black. These markings sometimes form broad, irregular bands. Bullrout may grow up to 30 cm in size, but are more commonly found at the 20-cm size.

Danger to humans and first aid[edit]

The dorsal, anal, and pelvic spines on a bullrout have venom glands on them, and should be handled with extreme care .[5] A puncture wound from one of these spines can be excruciatingly painful. For immediate relief of pain associated with the sting of a bullrout, immerse the affected area in hot water.

References[edit]

  1. ^ "Scorpaeniformes". Paleobiology Database. Retrieved November 15, 2012. 
  2. ^ "ITIS Standard Report Page: Notesthes robusta". Itis.gov. Retrieved 2013-08-16. 
  3. ^ "Notesthes robusta, Bullrout". Fishbase.org. 2012-07-03. Retrieved 2013-08-16. 
  4. ^ [1] Archived December 21, 2009, at the Wayback Machine.
  5. ^ "Bullrout, Notesthes robusta (Günther, 1860)". Australian Museum. 2012-09-15. Retrieved 2013-08-16.