nidification Nest building, e.g. preparation of a gravel concavity by Micropterus; evacuation under boulder by Cottus; barrel-like structure of weeds, sand or twigs glued together by Gasterosteus.

• 筑巢筑巢，例如黑鲈鱼类调整砾石凹洼处；杜父鱼类腾空大圆石下面区域；刺鱼利用杂草、沙子或小细枝固定成像桶状的结构.