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Semicircle angelfish

Pomacanthus semicirculatus

  • Fish
  • IUCN: Least concern
  • Usual depth1–77 m
  • Water temperature22–30 °C
  • Best monthsApril, May, and June
  • How commonOccasional
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About this species

Pomacanthus semicirculatus, also known as the semicircled angelfish, Koran angelfish, blue angelfish, zebra angelfish or half-circled angelfish, is a species of ray-finned fish, a marine angelfish, in the family Pomacanthidae. It is found in the Indo-West Pacific Ocean. It occasionally makes its way into the aquarium trade.

Text from the Wikipedia article “Pomacanthus semicirculatus”, 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: 24 records
  • February: 13 records
  • March: 18 records
  • April: 38 records
  • May: 51 records
  • June: 47 records
  • July: 13 records
  • August: 24 records
  • September: 20 records
  • October: 23 records
  • November: 20 records
  • December: 8 records

Depth and water temperature

Depth

Mostly recorded at 1–77 m · Deepest record: 99 m

  • 0–10 m: 78 records
  • 10–20 m: 32 records
  • 20–30 m: 26 records
  • 30–40 m: 27 records
  • 40–50 m: 8 records
  • 50–60 m: 1 records
  • 60–70 m: 2 records
  • 70–80 m: 10 records
  • 80–90 m: 8 records
  • 90–100 m: 4 records

Water temperature

Recorded in surface water of 22–30 °C

  • 20–22 °C: 2 records
  • 22–24 °C: 12 records
  • 24–26 °C: 52 records
  • 26–28 °C: 42 records
  • 28–30 °C: 28 records

Names and classification

English
Semicircle angelfish, Blue Angel, Blue Angelfish, Half-circled Angelfish, Koran Angelfish, Koran angelfish, Semicircle angelfish, semicircle angelfish, Semicircle anglefish, zebra angelfish, Zebra Angel-fish
Names in 6 more languages
German
Koran-Kaiserfisch
Spanish
Pez ángel Koran
French
Chirurgien tabac, Poisson-ange à demi-cercles, Poisson ange bleu, Poisson ange bleu, Poisson-ange à demi-cercles
Japanese
Sazanami-yakko, Sazanamiyakko, サザナミヤッコ
Thai
ปลาสินสมุทรหางเส้น
Simplified Chinese
半环刺盖鱼, 半環刺蓋魚, 疊波蓋刺魚, 藍紋神仙

Other scientific names: Holacanthus alternans, Holacanthus ignatius, Holacanthus lepidolepis, Holacanthus reginae, Holacanthus semicirculatus, Pomacanthops alternans, Pomacanthops caeruleus, Pomacanthops ignatius, Pomacanthops lasti, Pomacanthops poecilus, Pomacanthops reginae, Pomacanthops semicirculatus, Pomacanthus semicircularis

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).
  • 1,062 open-data records from 1831 to 2023.

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