Good or Bad?

[michika]

Not a gorilla crab, however it is bad. To the sump with it! Sorry, I can't endorse Crabby Heaven....

[KrazyKuch]

Gorilla Crabs are very hairy....so I would say to the sump with him....I had one similar looking to that and it ate a 4" powder blue overnight!!

[untamed]

Originally Posted by KrazyKuch

Gorilla Crabs are very hairy....so I would say to the sump with him....I had one similar looking to that and it ate a 4" powder blue overnight!!

Ate a 4" Powder Blue? How large was the presumed-guilty crab? The pictured crab can't be more than 1cm total size is not likely a fish killing threat at this time.

[jvision]

What would be the easiest way to trap this guy? A pop bottle or something?

[Murminator]

You can try that or a drinking glass lean up against the LR with some krill in it or something he will go in after it then can't climb back out or do what I do when you see the hole he is hidin in take tweezers of something sharp and ram it in the hole bunch of time usually takes care of them

[digital-audiophile]

It took me years to ctch two bad crabs in my tank.. it just takes patience and a good deal of luck.

[globaldesigns]

I am sorry but I do not think this is a bad crab, it has the same shaped claws as an emerald, which eats algae. I have crabs like this in my tank, with no issues.

If you look closely the claws are rounding at the ends not pointy, and the inner claw at the point is flat for scraping algae.

[jvision]

Originally Posted by Murminator

You can try that or a drinking glass lean up against the LR with some krill in it or something he will go in after it then can't climb back out or do what I do when you see the hole he is hidin in take tweezers of something sharp and ram it in the hole bunch of time usually takes care of them

Thanks for the tip, Murray! However, I wouldn't mind seeing what I've got before I turn it into soup. But, I don't want to wait two years to see this thing, either!!!
I give it a couple weeks, then it's crab soup! :P

[jvision]

Originally Posted by Murminator

You can try that or a drinking glass lean up against the LR with some krill in it or something he will go in after it then can't climb back out or do what I do when you see the hole he is hidin in take tweezers of something sharp and ram it in the hole bunch of time usually takes care of them

OK, so it's been a while, and I'm sure this guy is doing some damage! No shrimp left, no nudi's left, and my Sally Lightfoot has gone missing. All corals and fish still A-OK.
So, drinking glass, eh? What about all the hermits in the tank, won't they get stuck, too? Then won't this nasty crab do in some of them (seen a few hermit corpses as well)?

[MikeP]

I've removed one by finding his 'home' rock just by keeping an eye on the tank and then removing the whole rock and shaking him out into a bucket. I've also had luck with a jar propped up against the rockwork with one of those sinking algae wafers in it as bait. I wouldn't worry about the hermits. The evil crab will fill up on the bait once in the jar and if you do loose a hermit that sucks but you're better off making sure that crab is out of your tank.