👉 The term "ectocommensal" is a misnomer, referring to an animal that can only feed on certain types of food. It appears in the medical literature and is not recognized by any scientific organization or institution. The term is often used to describe an organism that does not consume all its nutrients from a specific diet, but instead consumes it selectively during certain times of the day or during certain conditions. Ectocommensal refers to an animal that has this selective feeding behavior.