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Dr, Mac set up and we are partners with our clam collector and farmer in French Polynesia.  As his exclusive distributor in the US we import thousands of these clams annually. Over the last 5 years we have handled tens of thousands of clams. All of these clams available in the US and worldwide come through our partnership.
We offer for sale wild collected and cultured clams. Generally cultured clams are easier to keep than wild collected clams. All our clams come directly from the farmer and collector, from our own collection station that we set up. 
In French Polynesia Maxim clams are very abundant, found in the hundreds of millions, in the remote islands and less common to rare in other areas such as Tahiti or Bora Bora. Our clams are farmed or collected in the remote Austral islands. Dr. Mac has worked closely with the government of French Polynesia and has met with the President and other authorities to allow for the legal culturing and export of these clams!
In the wild many French Polynesian Maxima clams do not have a lot of mantle extension, some do and some do not so this is perfectly normal.  All wild collected clams are freshwater dipped and held for two weeks at our collection station before export to us and we then also quarantine them here. All clams are healthy when we sell them.
Cultured clams are extremely hardy and do well in most reef aquariums, wild collected clams are hardy but more difficult to keep than the easy to keep cultured clams. Wild collected clams must have very intense lighting to survive. Many of our customers report that clams do better in their tanks that have larger fish populations that are well fed. While we do not recommend specifically feeding clams, they do better in systems were they can utilize dissolved organics in the water from feeding fish in the tank. 
PLEASE NOTE In French Polynesia, around the more remote islands in the Austral islands, we collect wild Maxima clams. There are hundreds of millions in that area. Some open and extend their mantle more than others in the wild and some have very little mantle extension in the wild, that is how these clams are naturally in this area. Maxima clams from other areas of the world usually have good extension and all the ones we culture have great extension, but not all the wild collected ones. The wild collected Maxima clams are challenging to keep and require very intense lighting, stable water conditions, and a well fed fish population. Over the years we have spoken with many hobbyists that have bought these clams and the most successful ones have larger well fed fish populations in their tanks. We started culturing Maxima clams in French Polynesia about 6 years ago with our partner there, his background was in the black pearl culture industry. In the beginning we funded the operation by collecting just the wild clams, now we can offer both cultured and wild, plus all the fish we collect their too. We tend to import far fewer of the wild clams now, in fact this last shipment included 110 and were the first we have offered for almost a year because we are concentrated more on the culturing now than wild collection, but many folks had been asking for these larger wild clams. We actually prefer to deal with just the cultured clams, they are hardier, have great mantle extension, and are easy to keep compared with the wild collected larger clams that are more for expert level hobbyists and those up for the challenge. All our clams are fully acclimated and quarantined before offered for sale. 

Water Condtions & Lighting
Tridacna Clams need strong lighting to survive long term because they receive most of their nutrition from the products of photosynthesis, we highly recommend 250 or 400 watt metal halide lighting or equivelant, such as intense LEDs. Clams, corals, and all invertebrates require saltwater that has full strength natural saltwater parameters: Specific Gravity 1.025-1.027, alkalinity 8dKH, calcium 450+, Magnesium 1300+. Clams have a better survival rate in tanks that are not the most nutrient poor. Clams do well in tanks where there is a good fish population that are well fed thus resulting in slightly higher nutrients in the water that clams then utilize.

Coloration in clams is greatly affected by viewing angle.  All of our photos are 'top down shots.  Color will vary in your tank especially if viewed from the side and under different lighting.  Photos shown are accurate in our tanks photographed under T-5 fluorescent lighting. Due to changes in viewing angles and with so many lighting possibilities in different tanks you may see different coloration.

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