The onyx clown is a hybrid between the black occ. And true perc. That's what I have read. Lol and thank you they are almost three years old and I'm pretty sure they are at max size lol but I have a plan and I'm doing this because its fun money is just a plus I have a life going already so its just a matter of time honestly and also what is that paste you are talking about? Can I use veggie cubes to feed the rots?