(J. Richardson, 1846)
The common toadfish or common toado or toadfish or toado (Tetractenos hamiltoni, formerly classified as Tetrodon hamiltoni or Torquigener hamiltoni) is a species of fish in the family Tetraodontidae of order Tetraodontiformes, found along Australia's eastern coast, from northern Queensland to Flinders Island, and around Lord Howe Island, as well as in New Zealand waters. It often buries itself in sand with only its eyes exposed.
The fish is sandy to whitish in colour, with small brown spots over most of the back and upper sides, and brown bars and blotches beneath. It has a maximum length of 14 cm. It is similar in appearance to the smooth toadfish, but has smaller spots and more prominent spines in the skin.
- Australian Faunal Directory: Tetractenos hamiltoni.
- World Register of Marine Species - Tetractenos hamiltoni (Richardson, 1846), accessed 8 March 2010.
- G.S. Hardy, "Revision of Australian species of Torquigener Whitley (Tetraodontiformes: Tetraodontidae), and two new generic names for Australian puffer fishes," Journal of the Royal Society of New Zealand, Volume 13, No. 1/2, 1983, pp. 1–48. 
- Fishbase - Tetractenos hamiltoni, accessed 8 March 2010 (find mirrors).
- Australian Museum: Common Toadfish.
- Ulrike E. Siebeck, Shaun P. Collin, Majid Ghoddusi, and N. Justin Marshall, "Occlusable corneas in toadfishes: light transmission, movement and ultrastruture of pigment during light- and dark-adaptation," Journal of Experimental Biology, Volume 206, 2177-2190 (2003).
- Puffer fish poisoning: a potentially life-threatening condition, accessed 8 March 2010.
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