Crab killed crocea clam.....can this be?

lanzo

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Hey guys

For the last few weeks i have noticed that my clam didn't do very well, and Sunday afternoon i took it out and opened it (it was already dead) to so see whats going on in the inside.

What i noticed was a crab on the inside.
Did this blady crab kill my clam??????

here is the pics:

DSC02612.jpg
 

seank

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I only tried my hands at a clam twice. The first one came from some chap in Durban that used to be on this forum and it died 02 days later. The last one lasted a couple of days when I noticed a couple of Hermit crabs chawed him stukkend. Upon closer inspection I found a hermit crab shell stuck between the clam. He probably got onto the Clam and as it wanted to close, it could not because of the shell, so the other Hermits had a ball..
 

jacquesb

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Hi Lanzo - NO - most likely NOT....

It was just chowing on the "free meat for all"..... scavenging....

Did you change ANYTHING on your tank in the last 4 weeks or so? Did you have anything happen to the tank, in this time?

The mantle of this clam seems to be extremely retracted (shrunken)..... Which means that it was "Stressed" for a while - not "eating" and perhaps not generating enough energy to sustain itself to stay healthy.... It was not "eating" enough by filtration either...
 

lanzo

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nothing happened to my system, i have a prehobsis( mind my spelling) out break now, i don't know what triggered it.

my other clam is doing fine, what could the cause be of this j?
 

lanzo

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sean- let me know when you want to try clams agin...i have about 5 left
 

amalick

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Sorry about your loss lanzo, bummer:( - Hope it wasn't that silly little crab (bring back the death penalty i say)

Geez - Thank goodness I havent thrown any of the hermits I collected into my DT yet. I will follow this thread with interest. Lets see what the forensic murder invesigators come up with
 

Mike

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I suspect that Jacques is right, the crab is too small to kill the clam, but big enough for an opportune dinner.

Bottom pic, near the clam shell join, there is what looks like a pyramid snail, they can eat clams/snails, check your other clams for tiny white shells - they are normally species specific, they either eat clams OR snails, not usually both.
 

leslie hempel

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i dont think its the crab, rather the clam suffering from gape and succumbing to it..
 

jacquesb

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Lanzo - you still struggling with bryopsis?

Do the following:
- increase your alkalinity (to at least 13/14 dKh)
- increase your magnesium (to around 1500)

Then the bryopsis will start dying out on it's own...
 

lanzo

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I suspect that Jacques is right, the crab is too small to kill the clam, but big enough for an opportune dinner.

Bottom pic, near the clam shell join, there is what looks like a pyramid snail, they can eat clams/snails, check your other clams for tiny white shells - they are normally species specific, they either eat clams OR snails, not usually both.
ill have a look at my other clam.

so i need to look for white shells on the clam( does it look like eggs)

i dont think its the crab, rather the clam suffering from gape and succumbing to it..
the clam didn't gape.

what does succumbing mean leslie

Yeah, im sure it isnt the clam, how is your water quality Lanzo?
i haven't tested my water in a months time...all the other inmates looks fine,only the prehobsis growing.

what do you want me to test mek?

Lanzo - how much did you feed (coral food) in the last month or so? Less that normal?
How long did you have the crocea clam for?
in the last month i only fed my tank 3 times with phyto plankton:(
i had my crocea almost a year
 

lanzo

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Lanzo - you still struggling with bryopsis?

Do the following:
- increase your alkalinity (to at least 13/14 dKh)
- increase your magnesium (to around 1500)

Then the bryopsis will start dying out on it's own...
wont this high alk effect my sps's
 

lanzo

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will such a small thing kill a big clam like that?

ill have a look when lights are on tomorrow, thanks for the heads up mike, hopefully my other clam is clean
 

Mike

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The snails usually come in large gangs, a healthy clam can put up with a few but not too many.

Give pyramid snail a google
 

lanzo

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Pyramid Snails

"Identification
Pyramid Snails, or Pyrams are very small snails that belong to the Pyramidellidae family. They are generally white in color, have a slender shell that tapers to a point, and do not grow larger than a few millimeters. The Pyramid Snails use their long proboscis, which is a tube-like mouth, to puncture the mantle of a Tridacna Clam in order to feed upon the fluids and zooxanthellae cells contained within. A few snails will typically not pose a threat to a healthy Tridacna Clam. The snails reproduce every 90-120 days, and if left to multiply, can cause serious harm or even death to their host in a very short period of time. "
 

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