Gorilla Crab?

Brisk

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Hi. Is this a gorilla crab?

20240910_113634.jpg
 

ISpeakForTheSeas

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I lost track of it. They are in a bucket but here is another one.

20240910_134618.jpg

20240910_134645.jpg
This one I would guess is a Mud Crab of some variety (taxonomic family Panopeidae).

Edit: This one is likely not reef-safe, but these crabs tend to stay small, so the damage they can do is generally pretty limited.
This one's a red mithrax - about as reef-safe as true crabs (brachyurans) get, but it may cause problems particularly once it's full grown.
This one is a decorator crab of some kind; not particularly dangerous for fish/inverts, but they like to take pieces out of things (like sponges, tunicates, macroalgae, and corals, to name a few) and use them for camouflage - so they're more reef-safe-with-caution.
 
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Brisk

Brisk

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The last crab I found was bigger than all the others and hairy, but didn't see black claw tips. This one safe too?

20240910_140643.jpg
 

ISpeakForTheSeas

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The last crab I found was bigger than all the others and hairy, but didn't see black claw tips. This one safe too?

20240910_140643.jpg
Can you get a pic of it's back/topside (dorsal side)? It's hard to tell the body shape of the crab from the pic.
 

ISpeakForTheSeas

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That's a Pilumnus species crab, and it seems to be female - not reef-safe; you could make the arguement that it's a gorilla crab:
Yeah, gorilla crab is a bit if a catch-all term in the hobby for not reef-safe, typically hairy crabs (technically, the term applies to Xanthid crabs and arguably Pilumnid crabs, but that's sort of irrelevant
 

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