Gammarellus
Gammarellus is a genus of amphipod crustaceans, commonly known as “scuds.” These small, laterally compressed invertebrates are widespread in marine environments around the world. They are an important food source for a variety of fish and other animals, and are also used as bait by anglers.
Characteristics
Gammarellus species are typically 5-10 millimeters in length and have a slender, elongated body. They have seven pairs of legs, the first two of which are modified into grasping appendages. They also have a pair of antennae, which are used for sensing their surroundings.
Environments
Gammarellus species are found in a variety of marine habitats, including rocky shores, sandy beaches, seagrass meadows, and estuaries. They are often found in intertidal zones and are well-adapted to survive in both water and air.
Common Names
Gammarellus species are commonly known as "scuds" or "sand hoppers." They are also sometimes referred to as "beach fleas" or "sea fleas," although this is not always accurate, as these terms can refer to other types of crustaceans.
References
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