Long-term memory retention in a wild fish species Labroides dimidiatus eleven months after an aversive event

we document correlative evidence of cleaner fish<i>Labroides dimidiatus</i>remembering being caught in a barrier net for eleven months. In 2015, about 60% of cleaners from one large isolated reef had been used for laboratory experiments and then returned to their site of capture. Eleven months later, 50% of cleaners at the same site showed an unusual hiding response to the placement of the barrier net, in contrast to three control sites where no cleaners had been caught during the last two years. The results suggest that a single highly aversive event (i.e., being caught in a barrier net) resulted in cleaners storing long-term vital information that allowed them to avoid being caught again.本研究记录了清洁鱼（裂唇鱼，*Labroides dimidiatus*）留存11个月前被困拦网记忆的相关佐证证据。2015年，某大型孤立珊瑚礁种群中约60%的清洁鱼被用于实验室实验，随后被放归其初始捕获位点。11个月后，该位点区域内50%的清洁鱼在拦网布设时表现出异常的躲避反应；与之形成对比的是，三个对照区域在过去两年内均未捕获过清洁鱼。研究结果表明，单次极强厌恶事件（即被困于拦网）可使清洁鱼形成长期关键记忆，使其能够在后续避免再次被捕获。