Some critters in a marine tank can be helpful, others can be an absolute nightmare. This section within the website will help you to identify the critters in your tank, tell you if they are good or bad, and help you to control the numbers within your aquarium.
If you are struggling with an identification please email pictured to firstname.lastname@example.org and I will see if I can help.
You can use the buttons below to browse all critters, or narrow it down by clicking the images below if you are looking for something specific.
Use the categories below to see specific critters.