Toadfish is the common name for a variety of species from several different families of fish, usually because of their toad-like appearance. "Dog fish" is a name for certain species along the gulf coast.
Toadfish make up a large portion of the dolphin's diet. More specifically 13%. Scientific experiments have shown that the mating call of the toadfish alerts dolphin predators to the fish's location. Similarly, the sounds caused by the dolphin when it is hunting its prey alert toadfish to the location of the predators and cause the fish to silence their mating call. Male toadfish will reduce their mating calls by up to 50% when they hear the low sound of a dolphin's "pop". 
The name "toadfish" is applied to some species of the family Tetraodontidae, including:
- The banded toadfish, Torquigener pleurogramma (Australia)
- The blackspotted toadfish, Arothron nigropunctatus (tropical Indian and Pacific Oceans)
- The common toadfish (or toadfish), Tetractenos hamiltoni (Australia and New Zealand)
- The prickly toadfish, Contusus richei (Australia and New Zealand)
- The red striped toadfish, Tetraodon erythrotaenia (Indonesia and Papua New Guinea)
- The smooth toadfish, Tetractenos glaber (Australia)
The name "toadfish" is also applied to some species of the family Psychrolutidae:
- The dark toadfish, Neophrynichthys latus (New Zealand)
- The frilled toadfish, Ambophthalmos magnicirrus (Macquarie Island)
- The pale toadfish, Ambophthalmos angustus (New Zealand)
- "Fish Eavesdrop to Avoid Becoming Dinner". Livescience. Retrieved 2016.10.20. Check date values in:
- Australian Faunal Directory: Tetractenos hamiltoni.
- Australian Faunal Directory: Tetractenos glaber.