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Japanese clam

The Japanese clam or Ruditapes philippinarum, is a marine bivalve mollusk, of the Verenidae family, highly appreciated in gastronomy, present on all coastlines of the world and which is the object of both extractive fishing and aquaculture farming.
Its shell is solid, ovoid, quadrangular, with an almost straight posterior margin, symmetrical valves, with serrated, concentric, and radial ribs that form a less dense reticulum than those observed in the carpet shell clam (Ruditapes decussatus).

The hinge of this mollusk has three cardinal teeth on each valve. Deep and rounded pallial sinus, without reaching the center of the valve, whose edge is smooth. The coloration of the shell is very variable, with a tendency to be dark, generally prevailing brown, decorated with various drawings, often large spots or concentric or irregular dark bands; whitish inside; It can reach 8 cm in length.

Its habitat is infralittoral, it lives buried in sand and mud, from the surf to a hundred meters deep, characterized by being a highly adaptable species due to its resistance to turbid waters, sudden changes in salinity and temperature, therefore which is a more resistant and prolific mollusk than the fine clam.
Its presence is very common on beaches, river mouths, brackish lagoons and estuaries because it can live both on sandy and muddy bottoms, presenting great resistance to polluted waters; for these reasons, it is a species present on all coastlines of the world.

The Japanese clam can be found both along the Pacific, and seas of China and Japan, as well as the western North Atlantic and Canadian coasts, as well as in the Mediterranean Sea, coasts of California and Mexico.
Their diet is based on phytoplankton, detritus, and decomposing organic matter in free water and in the benthos (soil and subsoil).

These nutrients are extracted by filtration, evacuating the water and waste through a siphon located at the back, in such a way that, like all molluscs, it is a biofiltering organism, contributing with its feeding behavior to the purification of water.
It is a species of great importance in aquaculture, China being the world's largest producer and in Europe, Italy is the most prominent, being cultivated in intertidal parks as it is developed in Galicia and in marshes transformed as estuaries or aquaculture parks in the southwestern zone. of the Iberian Peninsula. Regarding its consumption, it is a highly valued mollusk, due to its tasty meat, highlighting its high level of protein, low level of fat and contribution of iron, iodine, selenium and vitamin A.