Hierarchical clustering of genes showing significant gene regulation in response to environmental stress. The results of hierarchical clustering of genes that showed differential expression in response to different types of environmental stress in Pomacentrus moluccensis are shown in form of a heat map. Values presented are the values of the t-statistic summarising the expression responses across biological replicates. Where spots on the microarray could be unambiguously annotated with gene names, these are given to the right of the corresponding row in the heat map. Three genes that showed the most consistent induction across stress treatments are in bold. "3 h" indicates three hour exposure, "5 d" five day exposure to stressor.