Taxonomy
Belong to the family Lethrinidae within the order Spariformes; commonly called emperors, emperor breams, or pigface breams.
Emperor
A family of ray-finned fishes (emperors) found mainly in tropical Pacific and Indian waters, some species also occur in the eastern Atlantic.
emperorsemperor breamspigface breams
Last Updated Mar 9, 2026 · 4 sources
Species Guide
What to know about emperors
A clean field guide focused on habitat, identification, behavior, and conservation context without burying the useful parts.
Lethrinidae are a family of ray-finned fishes in the order Spariformes, commonly called emperors, emperor breams, or pigface breams. They occur in tropical waters of the Pacific and Indian Oceans; Lethrinus atlanticus is also recorded in the eastern Atlantic. These fishes are benthic feeders that consume invertebrates and small fishes. Some species develop molariform teeth used to crush and eat shelled invertebrates such as molluscs and crabs.
Benthic feeders consuming invertebrates and small fishes; some species specialize on shelled invertebrates using molariform teeth to crush prey such as molluscs and crabs.
Identification
How to identify emperors
The visual markers divers can use underwater, plus the species most likely to cause confusion.
Key identification markers
Feeding adaptations
Some species have molariform (crushing) teeth used to eat shelled invertebrates such as molluscs and crabs.
Habitat preference
Benthic fishes that feed on or near the seabed.
Diet
What emperors tend to eat
Useful feeding context that often explains habitat, movement, and encounter style.
Benthic feeders consuming invertebrates and small fishes; some species specialize on shelled invertebrates using molariform teeth to crush prey such as molluscs and crabs.
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Responsible Encounters
How to dive with emperors
Conservation-minded guidance for divers who want the encounter without adding pressure.
Give emperor space, avoid blocking the animal's path, and follow local site and operator rules for wildlife interactions with saltwater fishes.
Field Notes
Interesting things worth knowing
Useful species context that makes the encounter more meaningful once you are underwater.
Field notes
Geographic note
While the family is mainly tropical Indo-Pacific, Lethrinus atlanticus is recorded in the eastern Atlantic.
Common names
Members of the family are commonly called emperors, emperor breams, or pigface breams.
FAQ
Frequently asked questions
Clear planning and conservation answers written for search visibility and AI retrieval.
Research Sources
Emperor information sources
Primary and credible references behind the field-guide and conservation claims on this page.
Sources 4Last Updated
Primary wildlife guide source.
www.fao.org · Reference · FAO
Supporting wildlife source.
researcharchive.calacademy.org · Reference · researcharchive.calacademy.org
Supporting wildlife source.
Lethrinidae · Encyclopedia · Wikipedia
Supporting wildlife source.
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