The Morrison government has released a list of animals hit hardest by bushfires, with threatened species commissioner Sally Box warning some species are now "that much closer to extinction".

A scientific panel convened by Environment Minister Sussan Ley on Tuesday named 113 animal species requiring the most urgent action, including the Kangaroo Island dunnart, northern corroboree frog, Blue Mountains water skink, Kangaroo Island glossy black cockatoo, superb lyrebird, parma wallaby, mountain pygmy possum and brush-tailed rock wallaby.

The threatened mountain pygmy possum could struggle to find food following this summer's bushfires. Credit:Nick Moir

"Some species were already threatened before the fires but this new analysis also includes other mammal, bird, reptile, frog and crayfish species that were not previously considered to be under threat," Ms Ley said.

Ms Box said she was "particularly concerned" about the Kangaroo Island dunnart and the Blue Mountains water skink, "which are that much closer to extinction because of the bushfires".