In my opinion I've an answer for you but it's based on Ca variety (roughly relates to exotic variety too)

-"Hairy" hermit crabs- I just purchased two medium sized (approx 3" shells) "hairy crabs" from my favorite fish store. I have looked at everything I can find on the internet pertaining to these crabs to no avail. Since I rely on info I obtain from the internet to learn about new purchases I am stumped by the lack of info on my crabs. I placed one crab in my 55g reef tank with LR and one coral. It also has a large yellow tang, 7 assorted damsels, a brittle star and a goby. Is the crab a danger to any of these already established animals. The other crab went into a 75g tank with a blue tang (approx 8") and a carpet anemone. I am just stocking this tank as it's only 3 months old. If these crabs are aggressive I will definitely take them back to the store and get something more compatible for my tanks. Also since they seem to be of the hermit family should I keep several larger shells available for them to use as homes. Thanks for all the info your website brings to those of us who are less than marine biologists. This is my first time writing (because the site is so darn comprehensive and all my other questions have been answered before! I have 2 scarlet reef hermits in my 10g Nano and just want to know if they are hermaphrodites or distinctly male or female. My guess is the former, but their behavior makes me wonder. I think I have seen them mating. They both went down into a big, secluded hole in the live rock and faced each other and sort of interlocked legs and came partially out of their shells so the soft parts were exposed.

One crab is much big and more competitive and you may is dominant during this "interaction". The smaller even more passive crab is certainly one We later noticed initiating tiny larvae in the evening (I was shining a flashlight inside). He has spawned a couple of moments currently. I am unable to appear to select a reply throughout the if they are dioecious or hermaphrodite in my own instructions (I have instructions because of the Fenner, Delbeek and you may Sprung, Tullock, ainsi que al). Many thanks beforehand! This is basically the address Personally acquired now off a member off mine Dr. Robert Toonen Assistant Browse Professor, School out sugardaddie recenzja of Hawaii at Manoa College or university of Sea and you may Earth Technology and Technical, The fresh Hawai'i Institute out of Aquatic Biology I'm hoping it will help.

It can associate along with your conclusions: "There can be quite a bit of variability certainly one of more hermit crabs inside their mating conclusion, but I will attempt to make you certain realistic generalizations. About the newest larvae try relatively easy to raise in contrast to most inverts. I've never ever raised the preferred aquarium varieties (eg bluish- or yellow-legs), however, I have elevated several of the regional Ca types. With that exception, all hermit crab kinds in which I am common brood their larvae on the exterior (but inside cover) until they finish the nauplius degree (initial phase larvae, just like a child brine shrimp), this era may vary anywhere between regarding step 1 and you may 12 months, with respect to the variety. Brand new women next discharge both zoea otherwise megalopae (only love terms and conditions for more-and-more mature larval stages) hence normally prey on phyto- and you can zooplankton.