clam on substrate or rock?pic

carolgyrl1 · 10/26/2011, 02:00 PM

I got this clam at the reef palooza on sunday.this is my first clam, I think it is a tridacna crocea clam. I read about it, and it showed it being on a flat rock or a piece of tile. I tried this, the next morning , it was scooting off of the tile( it seems to prefer the bottom substrate, it is rather coarse. I placed it back on the bottom , im thinking I should leave it there, as it seemed happy for 1 day , till I tried the tile.

Toddrtrex · 10/26/2011, 02:53 PM

I would leave it. Though, how deep is your sandbed? The only concern would be if it attached to the bottom glass. I currently have 4 croceas, 3 are stilling on the sandbed, directly. The 4th, which is the smallest, is attached to an old clam shelf half.

carolgyrl1 · 10/26/2011, 04:20 PM

i will measure it tonite, I think it is around 3"

seapug · 10/26/2011, 04:24 PM

Croceas are almost always found firmly attached to a solid substrate in nature, but if yours seems to prefer the sand, put it where it seems happiest. Just make sure it's getting good light. If you bury a flat rock in the sand under the clam it will usually attach to it.

syrinx · 10/26/2011, 04:35 PM

They are called boring clams as a common name- they usually are in rock or reefs with just the mantle exposed. I always place them mid to high in the tank on liverock.

aleonn · 10/26/2011, 04:37 PM

Of the tridacnid clams, croceas are the most demanding in terms of light. Depending on your lighting, they'll probably get by if placed on the substrate, but will do best in the upper 1/3 of the tank IME. As seapug alluded to, croceas are rock-boring clams that are firmly attached to rock, so it's a good idea to put a flat rock underneath. That way, you can move it around if you need to aquascape.

10/26/2011, 02:00 PM	#1
carolgyrl1 Registered Member Join Date: May 2011 Location: palm springs, ca Posts: 230	clam on substrate or rock?pic I got this clam at the reef palooza on sunday.this is my first clam, I think it is a tridacna crocea clam. I read about it, and it showed it being on a flat rock or a piece of tile. I tried this, the next morning , it was scooting off of the tile( it seems to prefer the bottom substrate, it is rather coarse. I placed it back on the bottom , im thinking I should leave it there, as it seemed happy for 1 day , till I tried the tile. __________________ 240 display tank.72x30x24,125 lb live rock, yellow tang, hippo tang, royal gamma basslet,6 chromis, 6 line, hoevens wrasse, green mandarin, catalina goby, purple firefish, 2 oscellaris, 3 resplendant anthias,emerald crabs, hermits, 2 red banded cleaner shrimp,red starfish, anemone, colt coral, leathers, frogspawn, torch, mushrooms,35 gallon sump, mp40 vortec , maxijet, phosban reactor, 1/2 hp chiller, led lighting, moonlights, closed loop, water leak, temp, and power detector, secure view camera so I can see my fishies anytime! Current Tank Info: 240 gallon fish and reef

10/26/2011, 02:53 PM	#2
Toddrtrex Registered Member Join Date: Feb 2004 Location: Carol Stream, IL Posts: 23,162	I would leave it. Though, how deep is your sandbed? The only concern would be if it attached to the bottom glass. I currently have 4 croceas, 3 are stilling on the sandbed, directly. The 4th, which is the smallest, is attached to an old clam shelf half. __________________ Click my name and then "visit toddrtrex's homepage" for tank pictures Current Tank Info: 210g reef and 65g reef

10/26/2011, 04:20 PM	#3
carolgyrl1 Registered Member Join Date: May 2011 Location: palm springs, ca Posts: 230	i will measure it tonite, I think it is around 3" __________________ 240 display tank.72x30x24,125 lb live rock, yellow tang, hippo tang, royal gamma basslet,6 chromis, 6 line, hoevens wrasse, green mandarin, catalina goby, purple firefish, 2 oscellaris, 3 resplendant anthias,emerald crabs, hermits, 2 red banded cleaner shrimp,red starfish, anemone, colt coral, leathers, frogspawn, torch, mushrooms,35 gallon sump, mp40 vortec , maxijet, phosban reactor, 1/2 hp chiller, led lighting, moonlights, closed loop, water leak, temp, and power detector, secure view camera so I can see my fishies anytime! Current Tank Info: 240 gallon fish and reef

10/26/2011, 04:24 PM	#4
seapug Registered Member Join Date: Dec 2006 Location: 4980 ft. Posts: 7,954 Blog Entries: 1	Croceas are almost always found firmly attached to a solid substrate in nature, but if yours seems to prefer the sand, put it where it seems happiest. Just make sure it's getting good light. If you bury a flat rock in the sand under the clam it will usually attach to it. __________________ insert clever saying here. Current Tank Info: 200 gallon custom Marineland DD peninsular tank. LPS dominated mixed reef. Previous 90 gallon mixed reef TOTM April 2009.

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10/26/2011, 04:35 PM	#5
syrinx Registered Member Join Date: Jul 2006 Location: champaign Posts: 3,160	They are called boring clams as a common name- they usually are in rock or reefs with just the mantle exposed. I always place them mid to high in the tank on liverock.

10/26/2011, 04:37 PM	#6
aleonn Registered Member Join Date: Aug 2010 Posts: 4,041	Of the tridacnid clams, croceas are the most demanding in terms of light. Depending on your lighting, they'll probably get by if placed on the substrate, but will do best in the upper 1/3 of the tank IME. As seapug alluded to, croceas are rock-boring clams that are firmly attached to rock, so it's a good idea to put a flat rock underneath. That way, you can move it around if you need to aquascape.