Last several weeks one of my fenestratus and one of my hartwegi have been showing interest in each other. Sure enough, they laid a bunch of eggs on a rock today. Hartwegi is 9"+ and fenestratus is 7"+. Been growing these out, with other paratheraps, since Oct 2013. First time parents and so far they seem to be doing an excellent job. They are protective of their eggs but are not terrorizing their tankmates.