Is this crab safe

Teresa 42

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This crab was a hitch hiker on a live rock with mushroom coral is it safe for a tank with fish?
 

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It's hard to tell from the picture but I would say probably not. From the picture, it looks hairy which usually means they're not reef safe. Look up pictures of small gorilla crabs on google and see if yours looks like that.
 
If you have a sump, you can grow him out down there. Things that might be a problem can have useful lives cleaning the sump.
 
If you have a sump, you can grow him out down there. Things that might be a problem can have useful lives cleaning the sump.

+1 That would give you more time to ID it too. It's possible it might be reef safe, but most aren't (especially hairy ones).
 
Here is a better picture of the crab. Sorry I'm new to all the hitch hikers.
 

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Fuzzy crabs, or gorilla crabs, are not good citizens in a fish reef, but in the sump, he'd be ok, unless a fish got down there by accident.
 
Yeah, looks like a gorilla crab to me. There's only a handful of reef safe crabs. Emerald crabs, Strawberry Crabs, Arrow Crabs, Acro Crabs, etc. Even then, a "reef-safe" crab can develop a taste for corals and/or fish. They're opportunistic feeders. Honestly, the only crabs I have in my tank is Scarlet Reef Hermits and even then, I don't always trust them.
 
In a tank there’s always a chance the good become bad
Example, red leg hermits are supposed to be safe....NOT....had only attack and kill a clownfish, all crabs are opportunistic and will attack the slow, not moving, sick or dead
Since I removed every crab and hitchhiker, I have not lost a fish, coral or snail
Always assume bad in crabs.
 
In a tank there’s always a chance the good become bad
Example, red leg hermits are supposed to be safe....NOT....had only attack and kill a clownfish, all crabs are opportunistic and will attack the slow, not moving, sick or dead
Since I removed every crab and hitchhiker, I have not lost a fish, coral or snail
Always assume bad in crabs.

I agree. The only time I'd use a crab is for bubble algae and even then, I'd probably try a chemical solution. With that said, I've had good luck with Scarlet Reef Hermits. They seem to be a lot less aggressive than other hermits, though they will not hesitate to kill a snail if it fancies it's shell (especially ceriths). In fact, I've had them kill the snail for it's shell, use it for a day or two, then decide it's original shell was better.
 
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