Range and natural history
It often occurs close to shore and over clear coral reefs. Large schools can gather near beaches above turtle-grass beds. These observations place it in several shallow coastal settings rather than restricting it to a single type of reef.
FishBase also records it in polluted areas; that observation does not mean all degraded water is suitable habitat. The account notes a lack of confirmed Brazilian specimens in a major museum collection. Range statements extending well south of the Guianas therefore deserve checking against identified material.
Sources: Harengula humeralis species summary
