I think so Nancy. Mimius if O. aculateus, then is adult size i.e., armspan over three feet. Behaviour is uncharacteristic the last week to ten days. Mimius used to be out in the open almost all the time. Now she(?) stays in the den and cleans the interior constantly. I've also noted using funnel to propel fresh water through the den - maybe aerating eggs? In any case she/he still eats but with less enthusiasm and does not leave the den. The arms come out crawling and searching, however, the head and mantle stays hidden. It will take at least 6 weeks to get the new tank up and cycled si I have time to observe Mimius's behaviour without having to worry about disturbing the den and perhaps destroying a clutch of eggs. Unfortunately, I can't see the interior of the den and have no way of knowing if there are eggs or not. Have to wait and see.