G'day folks, I'm looking for a good sifting cat for my deepish (3 inch) sand. I have a 125. So far, my research suggests that cories are the best crew for the job, and I'm fine with that.
My daughter however (and wife too, as of yesterday) are in love with pictus cats. Trouble is, half of the internet says they get to 10 inches, and the other half says 5, which is more than a little inconsistent, so I'd really appreciate some straight talk on that point. I like them, but I'm not sure if I want 5 10 inch cats in the bottom of my tank. The other thing is I can't seem to find much info regarding their sand sifting prowess. Can they replace cories, or are they just not as keen on digging as them? And if not, and if they don't really get to 10 inches, can I keep a group of cories and a group of pictus cats together?

Also, how are these fish in terms of being jerks to plants?

Thanks for any advice.