Stiphodon Pelewensis is an algae grazing goby and are a peaceful fish but may get territorial towards other gobies. They prefer fast moving water with high oxygen levels. A river tank set up would be ideal for this type of species but can be kept well in other tanks. Their colors come out most when they are most comfortable, especially from the dominant males of the group. They get patches of dark spots and light spots, reminding me more of a panda like pattern.