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本文描述了日本沼虾摄食、领域、防御与攻击、清洁及交配行为，并与其它沼虾类、对虾类、虾蛄类等甲壳动物行为进行了比较研究。日本沼虾在水温１０℃以上摄食行为活跃，其领域行为明显，防御与攻击行为主要用第２步足。雌虾交配前可能分泌性外激素，雄虾用小触角接收这种激素，从而表现出交配行为。雌虾交配前要进行生殖蜕皮。其交配行为包括试探、守卫、攀爬、拥抱、交配及后守卫等６个连续阶段，在交配阶段排放精荚，持续时间仅２－３ｓ。
This article describes the marsh shrimp feeding, field, defense and attack, cleaning and mating behavior, and comparative studies with other crustacean animals such as marsh shrimp, shrimp, shrimp and other crustacean. Japanese marsh shrimp in the water temperature above 10 ℃ feeding behavior is active, its area of behavior is obvious, the main defensive and aggressive behavior with step 2 foot. Female pre-mating may be secreted pheromones, males with small antennae to receive this hormone, which showed mating behavior. Female reproductive molting before mating. Its copulation includes 6 consecutive stages of hedging, guarding, climbing, hugging, mating and guarding. The pods are released during the mating phase, lasting for only 2-3 seconds.