Callista (bivalve)

Callista is a genus of saltwater clams, marine bivalve molluscs in the family Veneridae, the Venus clams.

These clams are characterized by smooth, oval to somewhat elongated shells. The surface of the shell is generally glossy and can display a variety of colors and patterns, depending on the species. Callista species are found in temperate and tropical waters globally, often inhabiting sandy or muddy substrates.

They are filter feeders, drawing water in through siphons to extract plankton and other organic particles. Like other bivalves, they play a role in marine ecosystems by filtering water and providing food for other animals.

Species within the Callista genus vary in size and habitat preferences. Some species are commercially harvested for food in certain regions. Further research into specific species within the genus is recommended for detailed information about their distribution, biology, and conservation status.