Emerald Crab, Are they AGGRESSIVE

[blumarlin]

I have bought a trap & even tried the bottle trick several times. The only things I have caught is a couple of red legged hermits. Oh, & once I caught my baby cleaner shrimp. Boy, was he glad to get out of there, never went there again.
So, yeah, crabs in my tank kind of put a damper on my day, especially when I see my fish has been attacked one than once.
I really cant say for sure its the crabs, but I would put my money on it.

 

[scrmbld33]

i had 2 in 90, they never bothered anything that i know of,

 

[stingythingy45]

You need a little lobster type trap with some really stinky bait(silverside guts).
Inverted top cut off a 12 liter plastic soda bottle.
Set it at night near the crabs hidy hole and you'll have him in the morning.

 

[blumarlin]

I read a post on here once about a guy who watched helpless as a sally grabbed his yellow tang & pulled it under a rock never to be seen again. He had a very large tank w/ many corals & live rock & couldnt get to it.
Wet Web Media also has similar stories.
I added my sally as part of a cleaner package w/out doing reshearch. After the fact, I did reshearch & 95% of what I found out is they ar NOT reef safe.
I guess some are better than others, as all fish dont have the same personalities ie: one clown is a model citizen & another is a holy terror

 

[blumarlin]

You need a little lobster type trap with some really stinky bait(silverside guts).
Inverted top cut off a 12 liter plastic soda bottle.
Set it at night near the crabs hidy hole and you'll have him in the morning.

I have a lobster type trab, but I have never tried that. Thanks for the advice! I will give it a try tonight.

 

[tifluvsu80]

I have 2 in a 30gal. My bigger one just molted so he is really big. WHen I first got my 2nd emerald he and my Sally go into a fight and they each lost a claw. THe only other think I noticed is that they clip my plants off my rock.

 

[stingythingy45]

Hey,I'm from New England,we know how to catch our crabs....um....I mean crustations.

 

[dja1980]

<a href=showthread.php?s=&postid=11886344#post11886344 target=_blank>Originally posted</a> by blumarlin
I read a post on here once about a guy who watched helpless as a sally grabbed his yellow tang & pulled it under a rock never to be seen again. He had a very large tank w/ many corals & live rock & couldnt get to it.
Wet Web Media also has similar stories.
I added my sally as part of a cleaner package w/out doing reshearch. After the fact, I did reshearch & 95% of what I found out is they ar NOT reef safe.
I guess some are better than others, as all fish dont have the same personalities ie: one clown is a model citizen & another is a holy terror

Yeah, those things creep me out!

 

[SteveOhio]

I bought a small glass salt shaker and removed the lid and leaned up against a rock area near where the crab lived and put food at the bottom of the salt shaker. When I woke up the next morning, he was laying at the bottom. He is now in my sump. I presume and blame him for killing three of my fish. Since I put him there, I have added two more fish with no problem so I believe he was the culprit.

 

[gprdypoo04]

I've got an emerald in my 40 gallon and no problems with other corals, fish or other invertebrates. I was a little concerned when he was hanging around my hammer coral but he seems to hide out in it. I do feed him seaweed quite often though.

 

[Sk8r]

They will nip fish fins. They are a predator. Slow-moving or ground-bound fishes are at risk. Coral banded shrimp, same deal. Sally lightfoots have another problem: they grow to the size of a dinnerplate.

 

[tomreefer]

All crabs will eat anything they want when hungry and why I don't put them in.