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I was thinking this was a Derasa when I got it ($45 for the steal), but the more I started looking into them, derasa’s have tentacles at their intake valve, right? and mine does not that I have seen yet, just added ysterday. Beginning to worry this is a giga!? Is that possible? Pics under different lighting and times of day. Help me ID if you are familiar with clams, I’ve been scouring the internet trying to get clarification.

Wondering if the larger hole of its intake is 'gaping' or if it looks ok overall. The first picture was taken a day earlier than the second.

Hey guys. I don't see a lot of love on the clam forum these days. I've recently been OBSESSED with clams. They're pretty awesome, and I'd like to see your clams. Preferably a before and after picture (if they've grown a lot) and name of the species. Looking forward to see your clams! Here are my Derasa clams

Hey guys. So last night I went ahead and bought a dicho clam ( what it was posted as ), but I am pretty sure this isn't that type of clam. I'm not really sure its a clam as it looks like a oyster atleast to me based on shell shape. Any help appreciated http://imgur.com/gallery/zv2hn2F

Anyone have recent positive experiences with reasonably priced online clam orders? I’m looking for a smaller sized 2-3” , nice blue colored maxima or crocea clam to add to the tank. I’m running into a lot of out of stock or a $200-$300 or more price tags. Any suggestions appreciated.

Got this derasa about a month ago, seems to be doing fine, not quite as twitchy when i put my hand over but otherwise fine. I just put in some spirulina powder in the tank which i rarely do and clam started doing this within minutes... Is this ok? Im hoping this is just feeding behaviour? His intake has never opened so wide!

The small clam seems to like to stay under the larger one. I've moved it several times and it keeps finding its way back over. I'm worried that it's not getting enough light energy. I do feed green water and other clam foods.

I am looking to buy a clam, my LFS has crocea, squamose, and Maxima. Would any of these work under my lighting?

A friend has a Goniopora frag to give me but the only space I have left is near my precious (and glorious) Squamosa clam. Anybody have experience putting clams near corals with sweeper tentacles? Thanks in advance.

I just got this Squamosa clam last night. Here is how it looks I think it is dying or is dead... but my nasarrius snails haven't picked at it so maybe not dead yet Parameter: sg 1.0245 cal 435 alk 9.0 mg 1300 no nitrate or phosphate

I found a clam on the rock I got for my pico tank. It's about 2" long, and definitely alive. It's anchored firmly, and was open earlier, but shut when I tapped it. Which is interesting, because there are a lot of small, empty oystershells on the same rock. I can't get any pictures that look like anything other than a lump, it's got macroalgae all over it. I think it's a turkey wing clam by the shape. Trouble is, this is a 5gal tank. Will a clam this size do okay in here, or will it starve? Also, do they need to be fed actual particulates of food, like you'd feed a feather duster, or do they absorb straight-up nutrients from the water?

There seems to be small clams emerging in my tank where coral used to be and I don’t know if I should be worried, they emerged next to zoanthids, it’s a 29g biocube with 5 fish and 1 shrimp

Well I woke up this morning to open Christmas presents and saw my derasa clam looking horrible. All of my perams check out fine and my maxima is looking great. This happened over night, it looked fine yesterday but today it looks really bad. I'm thinking its pinched mantle. It's mantle is sucked all the way into its shell and its inlet and outlet are gaping wide open. It doesn't respond to anything. It didn't even close its shell when I touch it with tweezers. I tried tKing a few pics but not sure if you can see whats going on. Is it a goner?

I’m looking for a smaller clam species that could go in my future 15 gallon biotope and saw Reef Cleaners gets baby Cross Barred Venus Clams (Chinoe cancellation) and baby Hard Clams (Mercenaria mercenaria). I was planning on getting one or both speices eventually. Would I treat them like a feather duster and target feed them phyto and other small particle foods? Would it also be possible to get barnacles and mussels too or is my water volume too low?

I got an nice little Derasa Clam about 4 months ago. Was growing crazy, you can see the color difference in new growth. About a month ago added copepods and been adding phytoplankton daily as direction from algae barn. It starting not opening all the way and two days later, the snails are going to town on it. Possible suspects: Aiptashia X, removed CO2 scrubber summer PH dropped 0.02 roughly. Currently PH 7.87-8.2. Been fighting with dkh and Ca trying to get it up by dosing. No major swings. Increase from 7.7 to 8.8 over 6 days. Was not trying to increase that quickly, but it happened. I feel my water quality good. Calcium low at 390, but the thing was really gtowing. People commit on how much it had grown. No bristle worms best I can tell. Any ideas? If I had to bet I would put my money on the Aptashia X. Anyone have thoughts, insight, similar experience. Tank has been up and running for about 2 years. Any help appreciated. .

Is it risky to keep a maxima clam for 2 months in a 16G nano? I'm in the process of setting up my new tank (50G+20G sump w/refugium). There's a maxima clam I really like, it's quite big. It's difficult to find big tridacna clams in my country, so I'm thinking of keeping it in my 16G nano for a couple of months, and relocating it my new 50G as soon as it's cycled. Is it a bad idea?

I've just added two more crocea clams to my tank giving me a total of 4. I started thinking about the skimmer removing filter food from them. I've been skimming on the wet side. Would it be advisable to either reduce the skimmer to a drier point or even turn it off for a few days a week ? Does it even matter either way ?

How close can clams be to each other. I have a crocea on a flat rock with some space next to it. I have ordered another one and would like to put it on the same rock. As you can see theres space on the rock. Just not sure if they would be to close.

Hey, I'm still rather new to keeping clams and don't have the experience to really have a great feel for what might be going on day-to-day with the animals. I bought a supposed maxima-crocea hybrid about a month ago, at the time of purchase is was an off-opal color with a fair bit of pink and almost-white blues. Under my lighting it has always looked a fair bit different, though at times it does show off a bit of its' old opalescent streaks, I'm running an AI prime do deliver around 250 Par to the rock it is on (5 or so inches below the water line). It's on said rock (really it is in a shallow hole) because it jumped off the rubble-peice I had attached it to and then totally-latched itself into a hole in the rockscape overnight and refused to let me budge it (I chose to instead rearrange the rockwork so it was as high as possible in the tank, but it still can't quite open all the way). With that out of the way I was hoping to get some advice, information, or opinions on the bands of brownish and pinkish coloration around the mantle. I've read that they're everything from normal, to acclimation which can take months, to LED hot spots, to localized bleaching or overgrowth of symbiotic organisms from too much/little light-nutrient-etc. At this point I figured I would just ask and see if someone with more experience might have an opinion. The tank is a 12g nano-atoll and has no nitrate or phosphates, is minimally stocked, and I do 5% water changes weekly- dose two-part - and keep the alk around 10.5. The second picture is the most-similar to the clams' appearance, to my eyes at least, in person. Thank you for your time! Oh and it can actually open a bit wider than in my pictures , I just can't seem to not spook it with the camera >_<

I bought and acclimated a "hybrid maxima-crocea" clam yesterday and put it in a nice low-direct-flow and brightly-lit spot about 8" from the top of the tank. It fully-extended within an hour and was displaying most of its' inner-mantle. However this morning I woke up and it seems to have scooted itself into a hole, its foot and the few thin byssal threads it had (from being stored in sand at the LFS) are openly-dangling down into the (1/4 or so deep) hole and, on top of that, it seems to have positioned itself in a place where its shell is partially-obstructed. It hasn't fully opened since then, though it still has fine color, shadow-response, and can open *most* of the way. (a bit wider than in the picture below, (you can see part of the inner mantle the lights going off spooked it) The main problem is that, when I went to move it, the bugger seems to have its' foot wedged or some new byssal threads down as it fought against me with enough resistance that I felt I would hurt it even if I just tried to rotate it. Should I bite the bullet and risk trying to relocate it to somewhere it might be able to fully-open and grow, or just trust that the clam has found a great spot for itself and see what happens? Also please excuse the lights-off camera-phone shot and diatoms, kicked up some dust and double-dosed two-part by accident, the cerith and nerites are having a great time at their new buffet though.

Well, I went to Petland and saw a very unhealthy Crocea Clam (browning(closer to white), gaping, and very little light reflexes) I've always wanted a clam so I decided I would try and save it. As you can see in the pic, it has a lot of browning... Actually this picture is 4 days after I got it and the browning was much worse... It is actually starting to get its color back as you could see on the edges and some in the middle of browning. Right now it opens really good... could be more but hopefully in time, it will get better. It's reflexes is spot on now... it even closes quickly just be me looking into the tank. I think it's relfexes are where it should be. It is in a new 10g Nano with a 20" 70w MH Sunpod. I test for Ammonia, Nitrates, Nitrites, Ph, ALK, dKH, and CA. Everything is spot on except the CA. It has been around 370 the last couple of days. I purchased Tech CB A&B will do little small water changes per day and hopefully the CA will go up. If anyone has any recommendations as to what else I should do to save this Clam, I'm all ears. Tank Inhabitants: Cleaner Shrimp Crocea Clam 5 hermit crabs 11 polyp ZOA in a snail shell (I had to get it, it looked cool) 10lbs of live rock

So I purchased a Derasa clam and it was very healthy and my tank is very established with no issues. I acclimated the clam and it looked great... that evening after the lights went down my Pom Pom crab started “inspecting” the clam... the clam retracted, but I figured the crab was just checking things out and would go about its business... in the morning nearly the entire clam was gone and the Pom Pom crab was inside the shell... is this known to happen or was it a fluke? Thanks for any feedback...

Clams came in this week. There so small. Both are maxima. Im really happy to have clams again.

Got an Maxima clam on boxing day and there seems to be some sort of sps growing on the side of it. I'm wondering if it will harm the clam down the road or not.

Never seen such big selection of blue squamis and croceas on DiversDen. Maybe someone is interested so I though I’d post it here. Head over to check them out.