Salt water fish as an amphibian food

[Killian]

is salt water fish ok to feed to newts and salamanders?
like axolotl or xenopus

[Pollywog]

It is often recommended in old text books that salt water fish should be fed to fresh water fish and fresh water fish should be fed to salt water fish to avoid passing on any infections, however the norm seems to be to feed fresh water fish.

If you want to feed fish be wary that aquarists often put chemicals such as copper in the water that may be harmful to your amphibs. Guppies and White Cloud Mountain Minnows are both good choices for feeders.

[Killian]

I meant frozen fish that you buy in supermarkets like white bait etc.

[Pollywog]

white bait is fine, make sure you warm the dead fish to 80°C for five minutes in water immediately before feeding and add a vitamin and mineral supplement to the food.