Arrow Crab

I just recently added a really nice arrow crab to my tank. I love and it is getting a long quite fine with everything in the tank. After spending a lot of time admiring my new addition, I watched it do something weird last night. Well scavenging the rocks for food it stop, opened up its abdomen and started digging around in there. No idea why.

Has anyone else witnessed this? and if so, what is it doing?

 

It may be carrying eggs.

 

I had a clear view inside. It had two cords that ran vertically and it didn't seem to have anything that resembled eggs. I was just surprised to see it even open up, but then again that's the great thing about this hobby.

 

Its a alien in a biologically engineered crab body secretly watching you.

 

LOLZ :yelrotflm: :yelrotflm:

 

Keep a sharp eye on the arrow crab. They are neat to watch, but will kill and eat whatever it wants. That includes fish.

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I think I threw up in my mouth a bit. LOL.

I thought about setting up a tank for an arrow crab. They are cool creatures but are definitely not considered to be reef safe.

 

Caution...I had an arrow crab for about 2 days...the first day it was cool...after the first night I was missing an emerald crab....the beginning of the second night as my moonlight turned on...I saw how aggressive they can get. let me try to explain what I saw the best way I can...think of "war of the worlds" anything under him was his target! ok...this one may hit home a little better...picture all your little hermits crabs crawling for the closes rock fighting for holes to escape the giant...your snails climbing to the top of your tank to escape their fate.(remember these guys keep your tank clean SO CATER TO THEM) so after witnessing this...to make a long story short...the light was kept on all night and the next day he went right back to where he was...lesson learned R.I.P "emmy"...(EMERALD CRAB)

I'm not saying their bad....just be watchful.



90 GALLON DISPLAY
IN DISPLAY TANK;

180 LBS FIJI PREMIUM LIVE ROCK
90 LBS LIVE SAND
(3) 50 GPH POWERHEADS
(2) 1300 GPH POWER HEADS

30 GALLON SUMP
IN SUMP;
40 LBS LIVE SAND
55 LBS FIJI PREMIUM LIVE ROCK.
PHOSBAN REACTOR(150)
10 WATT U.V STEROLIZER (DONT HAVE AN ICK PROB)BUT JUST IN CASE
CORALIFE SUPER SKIMMER(150)
CORALIFE SUPER SKIMMER(65)
THEY WORK GREAT FOR ME!
(ELITE) 200 WATT HEATER
LIGHTING IN DISPLAY;
T5 NOVAS 48 INCH(6 BULB FIXTURES)
48 INCH MARINLAND L.E.D REEF LIGHTING
48 INCH (24) BLUE LED MOONLIGHT

LIGHTING ;
IN SUMP
30-90 WATT FLOOD LAMP

(MY UNDERWATER KIDS)...SAILFIN TANG,YELLOW TANG,YELLOW HEAD ANGELFISH,DIAMOND WATCHMAN GOBY,(2) BLUE GREEN CHROMIS
(4) ATLANTIC SEA ANENOMES,(20) MEXICAN TURBO SNAILS,(6)CERITH SNAILS,(10)RED LEGGED HERMIT CRABS,(10) BLUE LEGGED HERMIT CRABS,

IN SUMP;
(2)GREEN EMERALD CRABS
(5) BLUE LEGGED HERMIT CRABS
(5) RED LEGGED HEMIT CRABS

GOOD WATER QUALITY AND GOOD WATER MOVEMENT IS THE KEY!!!

TO tHoSe WhO rOcK...WiTh A fiLTeR sOcK.....
>>>>>>> I SOLUTE YOU <<<<<<<<

iMa bE 90 YEaRs OLd DoIn a 30% wAtEr ChAnGe...jUsT HaNd ME My CaNe aNd My SYPhON HoSe....IMa bE rOcKiN TilL I dIe...

 

He was just cleaning himself...