所有Tridacnaspp。爱好者可用的蛤stridacna derasa, the so-called smooth giant clam. This species is so smooth, in fact, that amorous, gold-chain-wearing male specimens have been overhead in bars making comments like, “Say, did it hurt when you fell from heaven?” and “If I could rearrange the alphabet, I’d put ‘U’ and ‘I’ together.”
Okay, maybeT. Derasa不是那么光滑，但是它的外壳确实缺乏明显的山脊或scutes，使其相对光滑。因此，这可能是名字真正来自的地方（尽管您必须承认我的解释更有趣）。如果有适当的条件，这是一个快速增长的物种，对于有储罐空间的首次蛤be饲养者来说，这是一个很好的选择。
Physical traits
T. Derasa是第二大Tridacnaclams, potentially reaching 18 inches to upwards of 2 feet in length. (The biggest of the bunch, of course, isT. gigas, which can exceed a whopping 4 feet.) Its highly symmetrical shell has five to seven vertical ribs and, as mentioned, is fairly smooth to the touch. The tentacles lining the inhalant siphon of this species tend to be relatively large, and the byssal opening on the bottom of the shell is smaller and narrower than this same feature on other tridacnids.
披风this species tends to be some shade of gold, brown, orange, or green with mottled or streaked patterning and often a bright blue margin. However, there are so many possible color/pattern variations to this species that any attempt to paint a general picture is more or less an exercise in futility (as is the case with most of the tridacnids, quite frankly).
Housing, lighting, and current
Considering this species prodigious growth potential and demand for good, stable water conditions, it should be kept in a commensurately large aquarium system—in the vicinity of 100 gallons. However, the actual volume of the tank is less important than its footprint. This species should be placed down on thesubstrate，而不是上岩石，因此储罐的尺寸必须在水上安装后允许相当数量的开放式底部空间。
T. Derasa, like all the giant clams, harbors symbiotic zooxanthellae in its tissues, so it demands moderate to bright reef-grade lighting. Water movement in the system should bemoderate and turbulent. You don’t want to blast these clams with a powerful linear current.
另外，密切关注系统的calcium and alkalinity levels, as these fast-growing clams can rapidly deplete these elements in building their shells.
Feeding
T. Derasa从过滤器喂养和Zooxanthellae的光合作用中得出营养。但是，随着蛤lam的生长，它的取决于前者，而更多地取决于后者。计划至少在浮游植物的长度达到大约4英寸的外壳长度上，以提供小标本的定期喂养。
Compatibility
The smooth giant clam is a great reef aquarium candidate, again provided it’s afforded adequate space and assuming it’s positioned at a safe distance from any stinging coral/anemone tentacles.
关于鱼类坦克伴侣，请记住，容易在肉质的无脊椎动物上咬住的物种，例如某些汤丝，兔鱼，蝴蝶鱼和矮天使，可能会表现出这种行为对蛤lam地幔。必威官网登录随行版一点点研究会很快揭示哪些鱼类最好排除在含有tridacnid蛤的水箱中。
