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Unread 02/24/2018, 01:56 PM   #1
Teresa 42
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Is this crab safe

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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Unread 02/24/2018, 02:03 PM   #2
ramseynb
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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.


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Unread 02/24/2018, 02:18 PM   #3
Teresa 42
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Ok thank you so much!!


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Unread 02/24/2018, 02:18 PM   #4
Sk8r
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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.


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Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.
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Unread 02/24/2018, 02:22 PM   #5
ramseynb
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Quote:
Originally Posted by Sk8r View Post
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).


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Unread 02/24/2018, 02:29 PM   #6
monkeysee1
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Black tipped pinchers = get RID of it!


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Current tank info: 90 Gallon saltwater 10 fish with a few inverts; NO CORALS!
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Unread 02/24/2018, 02:54 PM   #7
Teresa 42
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Here is a better picture of the crab. Sorry I'm new to all the hitch hikers.


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Unread 02/24/2018, 02:58 PM   #8
Sk8r
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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.


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Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.
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Unread 02/24/2018, 03:23 PM   #9
ramseynb
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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.


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Unread 02/24/2018, 03:35 PM   #10
Teresa 42
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Ok thanks everyone! It's not going in my tank!


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Unread 02/24/2018, 03:57 PM   #11
JamesHolt
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Trigger Food


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Unread 02/24/2018, 04:23 PM   #12
Uncle99
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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.


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Unread 02/24/2018, 06:15 PM   #13
ramseynb
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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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Unread 02/24/2018, 09:53 PM   #14
Bent
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Grump would like to be friends....


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Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump
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Unread 02/25/2018, 04:02 AM   #15
oldhead
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Originally Posted by Bent View Post
Grump would like to be friends....
What if that one is grumpier?


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Unread 02/25/2018, 08:27 AM   #16
Bent
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Originally Posted by oldhead View Post
What if that one is grumpier?
Not possible lol.

By “friends”, I meant lunch.


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Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump
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