Cubicus BoxfishThe Cubicus Boxfish (Ostracion cubicum) is somewhat reef safe. Use caution. They are known to eat tubeworms (feather dusters) and may occasionally nip corals. They have fascinating personalities and will provide endless entertainment. Juveniles are more yellow with black spots. As the Cubicus Boxfish grows, the yellow will turn more of a grey and brown tone. These fish are peaceful to most fish. Do not keep two of them together, unless they are