We have been developing mockup versions of new web interfaces for the Phenoscape Knowledgebase. In order to design an updated interface which is both more powerful and easier to use than the existing one, in February I presented a series of mockups to faculty, post-docs, and graduate students at the University of Oregon, the home of ZFIN. Following user-testing expertise at ZFIN, I met with the researchers in pairs and recorded their feedback on newly designed interfaces for viewing anatomical and taxonomic terms within the ontology hierarchy, configurable queries for phenotype annotations, and data visualization on phylogenetic trees. The feedback proved to be extremely valuable and has led to several modifications to the planned interface revisions.