Thank you for your question. There are at least 3 different plants called "tarantula plant." Yours appears to be the one resembling a fern, which is more commonly called a rabbit's or hare's foot fern, whose care and propagation are described here: https://hnr.k-state.edu/doc/houseplant-pubs/Fern%20Hares%20Foot.pdf Good luck!
Thank you so much Kristena. Yes, when I say tarantula plant my research always takes me to rabbits foot, however they differ in colour dramatically. I am trying to revive this 20yr old plant from its rhizome after it was affected by covid and left in the work office for 4weeks. I will definitly be using your advice. Hopefully I get good results to update you in time.
Welcome! The leaves are definitely ferns. Good luck with your project!