Hi JAHW
Well they might turn their noses up – probably depends how hungry they are. But fish flavoured cat food doesn’t necessarily have much fish in it and also apparently other flavours can also have fish in them.
According to Vale Wildlife Hospital “there is no nutritional difference between fish flavoured food and any other flavour”. I attach a link of theirs to some more information about feeding hedgehogs:
https://www.valewildlife.org.uk/wp-content/uploads/2018/04/Feeding-wild-hedgehogs.pdf
If the hogs do turn their noses up, you might want to try mixing the food with another flavour.
Good luck.
