PROBLEM TO BE SOLVED: To provide a method for individual identification of Danio rerio that makes it possible to identify an individual noninvasively, conveniently and reliably.SOLUTION: A method for individual identification of Danio rerio includes lateral observation of a fringe pattern of an anal fin and a caudal fin of each individual of two or more Danio rerio fishes, determination of characteristics of each individual from the observed fringe pattern, and identification of each individual based on the determined characteristics.SELECTED DRAWING: Figure 1【課題】非侵襲的で、簡便かつ確実に個体を識別できる、ゼブラフィシュの個体識別方法を提供する。【解決手段】2匹以上のゼブラフィッシュ(Daniorerio)の各個体の尻びれ及び尾ひれの縞模様を側面観察し、観察した縞模様から各個体の特徴を決定し、決定した特徴に基づいて各個体を識別する、ゼブラフィッシュの個体識別方法。【選択図】図1