The morphology of organisms is heavily influenced by their interactions with their environment. Thus, understanding the evolution of morphological structures and adaptations of an organism is critical when examining the environment in which they live. The goatfishes (Mullidae) are an ideal family to study this integrative relationship because of their diverse ecology and unique morphological structures like the barbel. Previous research has shown that there is variation in foraging behaviors and substrate type preferences among the 95 species in Mullidae. Our research is focused on 1) quantifying the amount of variation in morphology among species of goatfish 2) investigating evolutionary trends of morphology and 3) analyzing the relationship among morphology and ecology. Using a robust photo database of approximately 300 images spanning the majority of species in Mullidae, we determined and placed 46 landmarks on each image that capture important morphological structures of goatfish. To analyze the variation of these morphological structures among species, we performed a geometric morphometric analysis using a principal component analysis (PCA). Additionally, we compiled a comprehensive trait database that contains information such as preferred substrate type and diet. Preliminary results suggest that genera tend to cluster morphologically and that head size and body shape are important morphological distinctions. In addition, various ecological parameters, such as substrate preference and diet, seem to correlate with morphology. This understanding of goatfish morphology and its correlation with their ecology is important considering environmental changes and their affect on the persistence and diversity of species.