Male guppy (Poecilia reticulata) photographs from five sites in the Guanapo tributary in Trinidad.

Photographs of mature male guppies from 5 locations in the Guanapo Tributary on the island of Trinidad. Guppies were experimentally introduced from the Guanapo high predation location into four previously guppy-free low predation reaches of the Upper Lalaja, Lower Lalaja, Taylor, and Caigual Rivers in 2008 or 2009. Photographs were taken in 2008 (Guanapo), 2012 (Upper and Lower Lalaja), or 2013 (Taylor and Caigual) to examine rapid evolution of male color pattern in the introductions compared to their ancestor. Males were anesthetized in MS-222 and photographed in a lab under uniform lighting and photographic conditions. A tab-delimited text key to all photographs has been included.

本数据集收录特立尼达岛瓜纳波支流（Guanapo Tributary）5个采样点的成熟雄性孔雀鱼（guppy）照片。2008年或2009年，研究人员将原生于瓜纳波高捕食压力区域的孔雀鱼实验性引种至此前无孔雀鱼分布的上拉哈哈河（Upper Lalaja River）、下拉哈哈河（Lower Lalaja River）、泰勒河（Taylor River）与凯格瓦尔河（Caigual River）共4个低捕食压力河段。为对比引入种群与其祖先种群的雄性体色图案，探究其快速演化过程，研究分别于2008年（瓜纳波种群）、2012年（上、下拉哈哈河种群）及2013年（泰勒河与凯格瓦尔河种群）完成照片拍摄。所有雄性个体均经MS-222麻醉后，在实验室统一光照与拍摄条件下成像。数据集附带一份制表符分隔的文本索引文件，可用于检索全部照片。