Definition: The term "XPE3" (Xenopus laevis) refers to a specific species of crustacean, known for its unique adaptation to live in freshwater environments. Xenopus is a group of animals known for their highly specialized behavior in aquatic life, and xenopus laevis is a species that is particularly notable for its adaptation to live in freshwater. It shares characteristics with many other crustaceans found in freshwater, including a modified exoskeleton structure, which helps it navigate water more efficiently. Definition: Xenopus laevis (also known as the "fish turtle") is an aquatic crustacean. This species exhibits adaptations that allow it to survive and thrive in freshwater environments. These include its distinctive shell, which can be folded up to cover most of the body surface area without covering its exoskeleton; its ability to swim efficiently, particularly in open water, especially when submerged; and its specialized outer shell made of a material called an exostome (an exoskeleton that is not actually exoskeleton-like but instead allows it to expand while still remaining strong).
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