Advertisement I have two centruroides communal tanks. One contains C.Gracilis (4) while the other one contains C. Sculpturatus(im not sure how many are in this tank). The C.Gracilis tank has slightly moist substrate while the Sculpturatus tank is bone dry with except the area near the water dish. They are both maintained in the 80's using a heat strip. They are fed various insects multiple times a week. Both are aggressive feeders. They will tank down insects much bigger than themselves. C.gracilis tank C.sculpturatus tank Even though they are the same Genus the Gracilis are much more aggressive toward each other, ive witnessed multiple fights between my females. Two of the females are gravid for sure and the other two im uncertain as my male died a few weeks ago(old age). They frequently drink water together, but refuse to even get close to each other during feeding time. They also get into random scuffles during the day. This is a stark contrast to the Sculpturatus tank. The Sculpturatus eat together and drink together. Even though the Sculpturatus are an arid species they enjoy a good misting daily, I frequently see them cleaning themselves with the water. I even caught them submerged in the water dishes soaking. I have never seen them fighting, i have even had gravid females in the tanks with babies on their backs and they werent agressive towards cage mates. Of course I seperated the moms eventually. Both species however will readily cannibalize tankmakes if they arent fed frequently (typically during or after a molt). I have witnessed mating rituals in both. The Gracis seem to be less tolerant and recpetive of males. The males would frequently try to initiate the mating rituals and the females would walk away or sometimes hit them with their tail and the mall would scurry off. When I did witness a successful ritual it was quick and not as smooth. Almost like the female gave in unwillingly.The Sculpturatus males are better recieved by the females. Ive witnessed one male trying to simultaneously mate with two females. Some of the sessions would be brief however some lasted for hours (4-6). The males have even mated females that were already gravid without any aggression. Once gravid both species become lethargic as the gestation period goes on, but they do eat alot more. In some cases powering down 3 or 4 large crickets in one feeding. I have witnessed the Sculpturatus takinf care of the young if I leave them together once they leave her back.