how may hole should a clam has?

calvinci

calvinci

In Memoriam
I know at least there should be 2, one is the mouth, the other one for disposal of waste. How about another hole just at the back of the mouth? Is that a torn and should I remove this clam from my tank immediately?

Also can someone enlighted what type of clam that I have, is it maxima?

61565Picture_002.jpg


61565Picture_004.jpg
 
There should be 3 "holes". One is for intake of water into the gills and one is the outake. The third is the hole that the byssus threads come out of and should be on one of the straight edges of the shell close to the hinge.
 
4 holes. There are the two on the mantle, and two on the underside...one like you have pointed out, and possibly another right in the middle of the 'hinge' where the foot comes out.
 
thanks for the info, glad to know it's not muscle tear. BTW it just release itself from the rock that it's attached to, is it a bad sign?
 
what's the species for these 2 clams? The brown one don't fluorence under actinic, will the color improve under 150W DE MH?
 
They both look like crocea to me. What lighting do you have them under now? Detaching from the rock isn't a very good sign, but they can recover. Did you have it sitting on an angle or any strong currents to annoy them?
 
150W DE MH, it's pointing upward the light, so that it can receive all the light it wants. There is only mild current, it came attached to a small piece of rock, the brown one recently release the rock and attach to nothing now, it's on the subtrate. While the blue one is on a rock 4" from the water surface and about 16" from the MH
 
Agreed....please list all water parameters and how they were tested. It also might be too far from the light.
 
Looking at the pics again, I'm very concerened about their health....have you checked for pyramid snails? What fish do you have in the tank?
 
I don't see any pyramid snail in there, but I do have 3 astrae snail. inhabitants that share the same tank :

yellow tang
flame angel
six line wrasse
various clown
royal gamma
marble starfish
RBTA
sebae anemone

BTW I just got this clams 3 days ago, so may be they are acclimating to the new enviroment.
 
Herbert T. Kornfeld said:
4 holes. There are the two on the mantle, and two on the underside...one like you have pointed out, and possibly another right in the middle of the 'hinge' where the foot comes out.
Click to expand...
This is incorrect. There is only one opening in the bottom where the byssal gland/thread/foot come out.
 
Please list all water parameters. Your flame angel might also be a problem. They are more often that not incompatible. YOu may have to choose between them.

Have you checked at might around the byssal gland for pyramid snails? (Do you know what they look like?)
 
hi, ammonia, nitrit and nitrat all zero. salinity 1.022, kh 13, temp 80F, I never see any pyramid snail there, and the flame angel never bother any of my clam nor corals. I have 3 clam there and they looks ok except this one.
 
Your salinity is WAY too low. Clams need full strength salinity (35 ppt, 1.025-1.026)

Don't discount the flame angel, they can pick and go unnoticed for weeks or months. Only one pick a day can irritate a clam
 
Thatis a poor site for information. Pretty much all invertebrates without exception should have natural sea water level salinity, 35ppt, which is roughly 1.025-1.026. This goes for corals, clams, invertebrates, etc. That's what they had in the wild, and they don't tolerate salinity changes like fish. Clams also require very stable salinity. You should really read Giant Clams by Daniel Knop. Also, here's all you need to know about water chamistry for invert tank: http://www.reefkeeping.com/issues/2004-05/rhf/index.htm

If you are measuring salinity with a refractometer, that could also be a problem, as inaccurate as they usually are. It could be even lower. And 1.022 is flirting with danger for clams and other inverts...it's way too low.

Are you dosing anything like Iodine, strontium? That's also dangerous, and a potential problem.
 
Opps... ok, I will raise the salinity to 1.025, what's the problem with dosing minerals? I did dose calcium, strontium and iodine.
 
Iodine and strontium should never, ever be dosed without testing first. THey are very toxic! Have you tested your water for either? If not, stop dosing ASAP.

The only thing that needs supplimenting regularly in a reef tank is CA and ALK. Sites like live aquaria reccomend other stuff because they sell it. That's it!
 
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