ReefPriceIndex

Invertebrate

Clam (Tridacna / Derasa) — What's a Fair Price?

Based on 2 in-stock listings across 1 online reef vendor, updated September 5, 2026.

Lowest today
$149.00
Median
$149.00
Highest today
$149.00
In stock now
2

A typical Clam (Tridacna / Derasa) sells for around $149.00 right now. Anything near $149.00 is at the cheap end of today's market. Prices below are the cheapest current listing per vendor.

Cheapest per vendor

VendorListingPrice
World Wide Corals Leopard Print Maxima Clam $149.00 view →

Shipping differs by vendor (free-shipping thresholds, flat overnight rates) and can change which vendor is cheapest to your door.

Reading today's numbers

Every one of today's 2 in-stock listings is priced at $149.00, so there is no spread at all and $149.00 is the going rate.

Only one of the vendors we track currently lists it, so this range reflects a single store's listings rather than a cross-vendor comparison — worth keeping in mind when judging the price.

Keeping it alive once it arrives

Disclosure: the Chewy links below are affiliate links — if you buy through them we earn a commission, at no extra cost to you. This never affects the prices or vendor rankings above. Details.

Invertebrates tolerate swings in salinity and water chemistry worse than most fish do, so consistent mixing and regular testing matter more here than anywhere else in the tank. Chewy — a general pet retailer that sells no live coral or marine fish, and is not one of the vendors this index tracks — carries reef salt mixes, saltwater test kits, marine fish food, and coral and invertebrate food.

Price history

The market median for Clam (Tridacna / Derasa) has changed 7 times in 55 days of tracking. Median shifts here usually come from vendor promotion events or the in-stock mix changing rather than gradual drift (how these prices actually behave) — genuine repricings land on the price drops page as we observe them.

$143$187$231Jul 13: $225Jul 14: $225Jul 15: $225Jul 16: $225Jul 17: $225Jul 18: $225Jul 19: $225Jul 20: $225Jul 21: $225Jul 22: $225Jul 23: $225Jul 24: $225Jul 25: $225Jul 26: $225Jul 27: $225Jul 28: $225Jul 29: $225Jul 30: $187Jul 31: $187Aug 1: $150Aug 2: $150Aug 3: $187Aug 4: $187Aug 5: $187Aug 6: $225Aug 7: $225Aug 8: $225Aug 9: $225Aug 10: $225Aug 11: $225Aug 12: $225Aug 13: $225Aug 14: $225Aug 15: $159Aug 16: $154Aug 17: $154Aug 18: $154Aug 19: $154Aug 20: $154Aug 21: $154Aug 22: $154Aug 23: $154Aug 24: $154Aug 25: $154Aug 26: $154Aug 27: $149Aug 28: $149Aug 29: $149Aug 30: $149Aug 31: $149Sep 1: $149Sep 2: $149Sep 3: $149Sep 4: $149Sep 5: $149Jul 13Sep 5

Common questions

Every answer below is computed from this page's own numbers at build time, and updates with the daily data refresh.

How much does Clam (Tridacna / Derasa) cost?
The median price is $149.00, based on 2 in-stock listings across 1 online reef vendor as of September 5, 2026. Every current listing sits at $149.00. Only one of the vendors the index tracks currently lists it, so this reflects a single store's listings rather than a cross-vendor comparison.
Which vendors sell Clam (Tridacna / Derasa)?
1 of the online reef vendors the index tracks lists it as of September 5, 2026: World Wide Corals at $149.00. Each figure is that vendor's cheapest current listing.
Has the price of Clam (Tridacna / Derasa) changed?
Yes. The market median has changed 7 times across the 55 days the index has tracked it. Shifts here usually come from vendor promotion events or the in-stock mix changing rather than gradual drift.
Is Clam (Tridacna / Derasa) in stock right now?
2 of the 19 listings the index tracks for it were in stock as of September 5, 2026, across 1 vendor.

Cite this page: Reef Price Index, "Clam (Tridacna / Derasa) price," data through September 5, 2026. https://reefpriceindex.com/species/clam

Related reading from our data

We check Clam (Tridacna / Derasa) prices at every vendor we track, every day. How the index works.