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Tridacna derasa in a reef aquarium. The southern giant clam is classified as Vulnerable (VU) on the IUCN Red List, [1] and is listed on Appendix II of CITES. [13] The southern giant clam is a popular food item and aquarium species, and has therefore been hunted extensively throughout its natural habitat. [6]
By day, the clams spread out their mantle so that the algae receive the sunlight they need to photosynthesize, whereas the colour pigments protect the clam against excessive light and UV radiation. Adult clams can get most (70–100%) of their nutrients from the algae and the rest from filter feeding. [12] When disturbed, the clam closes its shell.
Tridacna crocea, the boring clam, crocus clam, crocea clam or saffron-coloured clam, is a species of bivalve in the family Cardiidae. It is native to the Indo-Pacific region. It is occasionally found in the aquarium trade [4] where it is often simply referred to as crocea. [5]
The maxima clam (Tridacna maxima), also known as the small giant clam, is a species of bivalve mollusc found throughout the Indo-Pacific region. [3]They are much sought after in the aquarium trade, as their often striking coloration mimics that of the true giant clam; however, the maximas maintain a manageable size, with the shells of large specimens typically not exceeding 20 centimetres (7.9 ...
Mantle of giant clam with light-sensitive spots, which detect danger and cause the clam to close. Tridacna gigas, the giant clam, is the best-known species of the giant clam genus Tridacna. Giant clams are the largest living bivalve molluscs. Several other species of "giant clam" in the genus Tridacna are often misidentified as Tridacna gigas.
The Registry of World Record Size Shells is a conchological work listing the largest (and in some cases smallest) verified shell specimens of various marine molluscan taxa.A successor to the earlier World Size Records of Robert J. L. Wagner and R. Tucker Abbott, it has been published on a semi-regular basis since 1997, changing ownership and publisher a number of times.
Tridacnidae – Giant clams Giant clam Tridacna squamosa (Northern KwaZulu-Natal to Mozambique) [2] Tridacna maxima (Zululand) [2] Mactridae – Trough shells Otter shell Lutraria lutraria (Namibia to Eastern Cape) [2] Smooth trough shell Mactra glabrata (Cape Columbine to Mozambique) [2] Angular surf clam Scissodesma spengleri (Cape Point to ...
Ark clam N Nahawele 'ili 'ili [1]: 182 Bronchriatus: Hawaiian mussel Bronchriatus crebristriatus: Mytilidae: Mussel Y [1]: 182 Pinna: Prickly pin clam Pinna muricata: Pinnidae: Pin clam N Nahawele [1]: 184 Pinna: Baggy pen shell Streptopinna saccata: Pinnidae: Pin clam N Pā [1]: 184 Pinctada: Black-lipped pearl oyster Pinctada margaritifera ...