What salamanders eat depends on whether they are terrestrial or aquatic.
The Differences in Diet between Terrestrial and Aquatic Salamanders
The diet of a salamander varies widely between either the land or water based amphibians, with land based salamanders relying on easily available insects and aquatic salamanders relying upon pond based microorganisms and small crustaceans to substantiate their diet.
Terrestrial Salamander Diet and Hunting Methods
Terrestrial salamanders rely solely on movement to hunt, and will voraciously consume any insect that is readily available. Common insects that make up the terrestrial salamander diet include but are not limited to moths, pill bugs, mosquitoes, fruit flies, bloodworms and earthworms. For terrestrial salamanders in captivity, mealworms can be used for feeding, but do not contain enough nutrients to fully substantiate a salamander diet.
Aquatic Salamander Diet and Hunting Methods
Aquatic salamanders also rely on movement to hunt, but heavily depend on odor and touch to successfully feed. Water fleas, guppies and small crustaceans such as Daphnia or brine shrimp are usually consumed, as well as various other small aquatic animals and worms that can be caught with a net. Live prey is essential in the hunt for both aquatic and terrestrial salamanders, as they are attracted to movement and will not pursue dead prey.
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h “Aquatic Feeding in Salamanders | Stephen Deban – Academia.edu.” Academia.edu – Share research. N.p., n.d. Web. 7 Nov. 2012. ttp://www.academia.edu/599522/Aquatic_Feeding_in_Salamanders