These crabs wear shells on their backs including the hermit crab, nevertheless the dogs store named him or her «hairy crabs»

-«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. 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. Janie

In the event that these crabs was competitive I am able to definitely grab them straight back towards store as well as have something alot more compatible to have my tanks

Marine Hermit crab reproduction methods – 7/ Hello WWM Crew, I’m a long time reader and fan of the site. Glad to hear> 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.

You to definitely crab is much larger plus aggressive and are dominant during this «interaction». The smaller even more passive crab is just one We afterwards saw introducing tiny larvae later in the day (I was radiant a torch with it). He’s got produced a couple of times already. I can’t apparently see an answer regarding the when they dioecious or hermaphrodite in my own books (We have guides from the Fenner, Delbeek and you can Sprung, Tullock, et al). I’m sure this is simply not out of environment shattering importance, but I became only interested. Thanks beforehand! I do believe I’ve an answer for you but it is based on California types (approximately pertains to warm kinds too). This is basically the address i received today from a member out-of exploit Dr. Robert Toonen Secretary Search Professor, University from Hawaii during the Manoa School regarding Ocean and you will World Science and you may Technical, The new Hawai’i Institute of Marine Biology I hope this will help to.

I have never increased the preferred tank variety (such as for example blue- or red-legs), but I have increased a number of the regional Ca varieties

It can associate with your results: «There was a lot of variability certainly one of different hermit crabs within their mating behavior, however, I shall attempt to leave you certain practical generalizations. At the very least the larvae try relatively easy to raise in comparison to the majority inverts. With you to definitely exemption, every hermit crab types that I’m common brood their larvae on the outside (however, inside the layer) up to they complete the nauplius amount (early stage larvae, similar to a child brine shrimp), this era may differ between about step 1 and you may one year, depending on the varieties. New female next release sometimes zoea or megalopae (just adore terms and conditions for lots more-and-old larval degrees) and this normally feast upon phyto- and you can zooplankton.