Macroevolution
It is possible for e.g feline species to give birth to new species e.g tiger and lions are different (can’t interbreed) despite in the same parent species. This much macroevolution is accepted. But for a fish to eventually become an ape. That’s the one he is disagrees with. Ghamidi Sahab opinion is that the current evidence isn’t enough to prove species to species macroevolution (it takes too long to observe so mainstream idea simply reached this conclusion maybe all species came from a single species, Ghamidi Sahab doesn’t accept this part of the theory).