You'd have to very closely define what precisely you meant by the word 'species', and go from there. It's a surprisingly slippery thing to do. Even the common

You'd have to very closely define what precisely you meant by the word 'species', and go from there. It's a surprisingly slippery thing to do. Even the commonly-accepted 'can have viable offspring together' isn't as cut-and-dried as you might think: https://www.sciencealert.com/darwin-s-finches-evolve-into-new-species-in-real-time-two-generations-galapagos https://www.sciencealert.com/darwin-s-finches-evolve-into-ne... More looking at edge-case compatibility between germlines, in this case modern human vs. neanderthal: https://en.wikipedia.org/wiki/Interbreeding_between_archaic_and_modern_humans#Neanderthals https://en.wikipedia.org/wiki/Interbreeding_between_archaic_...