ABSTRACT

Shelters are frequently used for fish rearing to improve welfare conditions. In this study, whether Nile tilapia prefers specific shelter colors was evaluated. Thus, fish preference for white, red, blue, green or yellow shelters was tested. A high variation of individual preference responses for the shelter colors among fish was found. Even so, while red shelter was clearly avoided by Nile tilapia, a clear-cut preference could not be concluded. Thus, avoiding red shelters for rearing Nile tilapia is recommended, assuming fish preference, or non-preference, as important elements considering welfare conditions. Moreover, individual variability should also be considered whenever possible.

摘要

住房经常用于养鱼以改善福利条件。在这项研究中，评估了尼罗罗非鱼是否偏爱特定的庇护所颜色。因此，测试了鱼类对白色，红色，蓝色，绿色或黄色庇护所的偏好。发现鱼类对遮蔽物颜色的个人偏好反应差异很大。即便如此，尽管尼罗罗非鱼明确避免使用红色遮蔽物，但仍不能得出明确的偏好。因此，建议避免使用红色庇护所来饲养尼罗罗非鱼，并假设鱼类偏爱或不偏爱是考虑到福利条件的重要因素。此外，还应尽可能考虑个体差异。