Derasa Clam - Tridacna derasa - Small Aquacultured
That Fish Place - That Pet Place
Item # 264226 / Manufacturer Part # F93 0045 0381
Clams are wonderful additions to any reef aquaria but do have some requirements that make them more difficult than other inverts to keep. Some research is recommended before purchasing one to find out what species will work the best in your reef aquarium.
Derasa Clams (Tridacna derasa) can grow quite large in the home aquarium. They are typically found with yellow to gold striped mantle colorations outlined in blue or purple. Mantle patterns and colors will vary between individual specimens. Unlike most other species of clams, the Derasa Clam has a mostly smooth shell without prominent scutes. They generally have six or seven vertical folds but can have up to twelve. The shell itself is whitish and fan-shaped when small, becoming slightly more elongated as the clam grows. These clams are usually fairly thin at the top when closed and only slightly inflated towards the bottom.
Derasa's are found on a variety of surfaces. They can grow within colonies of corals (especially Acropora corals) or on sandy flats, rubble piles or rock faces. They are usually found in fairly shallow waters but some have been found much deeper in areas with very clear water.
The "byssal opening" where the foot and byssal threads are extended from on the bottom of the clam is very small on Derasa Clams. Young clams are only lightly attached and this attachment is lost as the clam grows. Some Derasa Clams have even been found with no byssal opening at all. The opening is more slot-like in shape rather than the elliptical or circular opening found on other clams. The top edge of this clam is symmetrical and the clam can close up very tightly.
Derasa's are one of the hardiest Tridacna species. They require strong lighting and ideal water quality and should be placed under high direct light (Metal Halide, VHO, or Power Compact). Smaller clams rely heavily on planktonic foods filtered from the water for their nutrition. They should be fed regularly with various types of planktonic foods like phytoplankton, zooplankton, oyster eggs, rotifers and similar items. Avoid keeping with potential predators or tankmates that may nip at the clam's mantle like some wrasses, angelfish, crabs, and others.
For more information on these and other clams, visit the Giant Clams Species Profile on That Fish Blog by our staff marine biologists.
The clam pictured above is representative only - the coloration of the clam you receive may vary. Please contact the Livestock department for information on availability of specific colorations.
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Most of our live items are covered by our 14-day Arrive Alive Guarantee. Restricted Items are not covered by this policy for any reason. View the full Livestock Guarantee Policy and Restricted Species list for full details. Any losses must be reported to us within the 14-day guarantee period and we do require verification for any losses.Shipping charges are not covered by our livestock guarantee policy and are non-refundable.
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Live orders (fish, invertebrates) are shipped FedEx Standard Overnight or FedEx Priority Overnight Monday through Thursday for delivery Tuesday through Friday. Live plants and live rock orders are shipped via FedEx 2-day express Monday through Wednesday for delivery Wednesday through Friday. Shipping upgrades to overnight shipping are available for an additional fee.Orders placed before noon (Eastern) are generally shipped the same day. Orders placed after noon are shipped the next shipping day.PayPal Orders Only: We cannot hold or modify orders placed with PayPal. PayPal's policies do not allow us to hold orders for more than three days after they are placed. Depending on when the order was placed, this may mean that the payment authorization is expired before the order is scheduled to be shipped. In this instance, a livestock department representative will contact you regarding the options for your order.
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*Standard Overnight: $34.99Priority Overnight: $44.99Live Aquarium Plant Shipping Charges:
FedEx 2-day Plant Shipping: $13.99 (default ship method)*Standard Overnight Plant Shipping: $29.99Priority Overnight Plant Shipping: $39.99Live Rock Shipping Charges:
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