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Old 05/19/2018, 02:15 PM   #1
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Join Date: Dec 2013
Posts: 67
Acro crab good or bad?


Saw this guy in my pink lemonade colony a few minutes ago. Came out during feeding. I have had the colony for a while. Everything in the tank appears to be fine. Any ideas if this is a bad one? Claws are black tip

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Old 05/19/2018, 05:47 PM   #2
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Join Date: Mar 2018
Posts: 269
Not only good but Preferred and AWESOME.

they eat debris and dead tissue off Acros to keep them very healthy.

They are a welcomed guest to Acros hosting them.

Some people buy Acros crabs to put in each Acros colony they own. 99% of crab owners say the acros hosting a crab is the best looking Acros in the tank......and acros with NO crab looks like pooooo

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Old 05/19/2018, 09:59 PM   #3
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Join Date: Apr 2006
Location: Stamford, CT
Posts: 17,319
I would say that about 3 out of every 4 wild or macro cultured acro colonies I have bought have a resident commensal crab. It's one of the many cool things about keeping a reef tank. Certainly they do no damage. I see no compelling evidence that colonies with are necessarily healthier than those without however. Apparently I'm the 1%


Got back into the hobby ..... planned to keep it simple ..... yeah, right ..... clearly I need a new plan! Pet peeve: anemones host clowns; clowns do not host anemones!

Current Tank Info: 450 Reef; 120 refugium; 60 Frag Tank, 30 Introduction tank; multiple QTs
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