The Porcelain Crab, scientifically known as Pachycheles biocellatus, is a fascinating crustacean often found in the subtidal, sublittoral, and infralittoral zones of the ocean. They inhabit depths ranging from the lower limit of the intertidal zone to the shelf edge, approximately 200 meters, making them a common sight in the neritic marine zone.
Description & Characteristics
These crabs are easily recognizable for their unique appearance. The Porcelain Crab, Pachycheles biocellatus, boasts a flattened and somewhat oval-shaped carapace, which is typically white or pale in color. Their most distinctive feature, however, are the bright blue spots that adorn their carapace, resembling the eyes of a porcelain doll. This characteristic is also reflected in their common name, highlighting their striking appearance. They can reach a maximum size of approximately 5 cm, showcasing a compact and elegant form.
Habitat and Occurrence
The Pachycheles biocellatus thrives in a wide range of marine habitats, particularly in areas with rocky substrates. They are frequently found clinging to rocks, sponges, and even seaweeds, utilizing their strong claws to anchor themselves. They are particularly adapted to the subtidal, sublittoral, and infralittoral zones, where they exhibit a remarkable ability to navigate the challenging conditions of these environments.
Taxonomy
The Porcelain Crab, Pachycheles biocellatus, belongs to the family Porcellanidae, a diverse group of crabs known for their smooth, porcelain-like carapaces. They are classified within the order Decapoda, which encompasses a vast array of crustaceans possessing ten legs. They further belong to the Class Malacostraca, a large and diverse class that includes the majority of familiar crustacean species. This classification reflects the evolutionary relationships and shared characteristics of the Porcelain Crab with other crustaceans.
Feeding
The Porcelain Crab, Pachycheles biocellatus, primarily feeds on small organisms like copepods and plankton, exhibiting a scavenging behavior. They actively seek out food in their surroundings, utilizing their small, pincer-like claws to grasp and consume prey. These crabs play an important role in the marine ecosystem, contributing to the balance of the food web by consuming a diverse range of organisms.
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