HCA: Hermit Crab Association

So sadly I have a working to find my oldest crab mischievous eating my E who just came up from the molt last night everything is still the same except I added more substrate and I’ve been providing tons more protein so I don’t know why they’re still attacking other crabs for the protein


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So sorry this happened again.

I had to separate out my Es from my PPs because my PPs would not stop hunting them.

Oh man. I'm so sorry for your loss. Are you also providing a lot of calcium? I have never had an issue with my crabs doing this. By the way I am by no means claiming I am perfect -but, I do keep Es and PPs successfully together.

I provide a minimum of two sources of protein daily, and a variety of calcium for them to choose from. In my tank I give my guys cuttlebone, oyster shell (fine and coarse), calcium carbonate, eggshell (whole and powdered) and coral. I do also give them crab exo once a week. I know this can be excessive - but I figure they are all individuals - just like us. Some like one kind, others may like a different kind.

Try not to get discouraged.

I do give egg shells. I also put calcium powder over their food when i provide it. I am only home enough to change the food out once a day. They lived in harmony until I introduced Aries my newest little PP then it’s those two that I’ve busted killing my Es. Could it be a dominance thing. It’s hard for me to wrap my head around due to mischievous(the killer) and Hercules (the killed) to fight or kill they lived in harmony for 3 months until I introduced the baby. It’s defiantly hard for me to wrap my head around.


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If your crab just came up from molting it may still have traces of the scent lingering and that made it smell like a snack to other crabs.

Not a dominance thing or lack of proper food, just that the scent they put off when molting.

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