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Blue-lined Emperor

Lethrinus laticaudis

  • Fish
  • IUCN: Least concern
  • Usual depth10–42 m
  • Water temperature22–29 °C
  • Best monthsOctober
  • How commonOccasional
All species

Photo credit: (c) Luke Lythgoe, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Lethrinus laticaudis, the grass emperor, blue-lined emperor, blue-spotted emperor, brown kelp-fish, brown morwong, brown sweetlip, coral bream, grass sweetlip, grey sweetlip, piggy, red throat, red-finned emperor, snapper bream, squire, sweet-lips or tricky snapper, is a species of marine ray-finned fish belonging to the family Lethrinidae, the emperors and emperor breams. This fish is found in the eastern Indian and western Pacific Oceans.

Text from the Wikipedia article “Lethrinus laticaudis”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 12 records
  • February: 26 records
  • March: 16 records
  • April: 11 records
  • May: 34 records
  • June: 24 records
  • July: 27 records
  • August: 45 records
  • September: 50 records
  • October: 210 records
  • November: 49 records
  • December: 27 records

Depth and water temperature

Depth

Mostly recorded at 10–42 m · Deepest record: 92 m

  • 0–10 m: 17 records
  • 10–20 m: 74 records
  • 20–30 m: 71 records
  • 30–40 m: 39 records
  • 40–50 m: 18 records
  • 50–60 m: 4 records
  • 60–70 m: 2 records
  • 70–80 m: 0 records
  • 80–90 m: 1 records
  • 90–100 m: 1 records

Water temperature

Recorded in surface water of 22–29 °C

  • 22–24 °C: 109 records
  • 24–26 °C: 51 records
  • 26–28 °C: 69 records
  • 28–30 °C: 49 records

Names and classification

English
Blue-lined Emperor, Blue-spotted Emperor, brown kelp-fish, Brown Morwong, Brown Sweetlip, coral bream, Grass emperor, grass sweetlip, Grass Sweet-lip, grey sweetlip, Grey Sweet-lip, piggy, red-finned emperor, red-throat, Red Throat, snapper bream, Squire, Sweet-lips
Names in 1 more languages
French
Bossu

Other scientific names: Lethrinus anarhynchus, Lethrinus fletus, Lethrinus lacticaudis

Similar species

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

  • Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
  • Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
  • Conservation status as published by GBIF (IUCN Red List).
  • 608 open-data records from 1963 to 2023.
  • Species data updated November 4, 2026.

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