Sheesh. Even the strictest "creation science" types accept speciation. It's effectively essential to do so if you accept a literalist version of the "Noah's Ark" story, as there would be too many animals for the ark to carry otherwise.
Indeed such Biblical literalists implicitly invoke rates of speciation (differentiation of "created kinds" often into dozens and dozens of species, often with varying chromosome numbers and conventionally classified into multiple genera and/or sub-families, e.g. the "horse kind" including horses, zebras, asses, etc) that are vastly more rapid than any evolutionists would consider remotely plausible.
Less strict creationists also accept that speciation occurs (or did occur). In fact I've followed the antievolution movement for many years and I'm not aware of a single "professional" creationist or antievolution scientist type who believes in fixed species. You have to go back at least to the 19th Century for that.
I believe in adaptation. I don’t believe that a monkey becomes a human.
Horses don’t become alligators. That’s all I’m saying.