Corophiidae

Corophiidae is a family of amphipods, a diverse group of crustaceans belonging to the order Amphipoda. Amphipods are characterized by their laterally compressed bodies and the presence of three pairs of antennae. The family Corophiidae is a significant component of this order, found in marine, brackish, and freshwater environments worldwide. Members of this family are typically small, benthic (bottom-dwelling) organisms.

The Corophiidae are distinguished by several morphological features, though these can vary between genera and species. Generally, they possess robust, often asymmetrical gnathopods (first two pairs of thoracic appendages used for feeding or grasping) and a characteristic telson (the posterior-most part of the body). Many corophiids are known for their ability to construct tubes or burrows, often using secreted silk-like material. These tubes can be found attached to substrates like algae, seagrass, or sediment.

These amphipods play important ecological roles in their respective habitats. They serve as a food source for various fish and other invertebrates. Their tube-building activities can also influence sediment structure and stability. The diet of corophiids is varied, often including detritus, algae, and small invertebrates. Classification within Corophiidae has undergone revisions, with some former genera being reclassified into other families. Ongoing research continues to refine our understanding of their phylogeny and biodiversity.