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Bicolor Damselfish

Pycnochromis dimidiatus

  • Fish
  • IUCN: Not evaluated
  • Usual depth1–27 m
  • Water temperature19–30 °C
  • Best monthsApril, May, and August
  • How commonOccasional
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About this species

Pycnochromis dimidiatus, commonly known as the chocolatedip chromis or Red Sea half-and-half chromis, is a species of chromine damselfish in the genus Pycnochromis. It is endemic to the Red Sea, where individuals prefer to live on reefs from depths of 1–36 m (3.3–118.1 ft). It was described by Carl Benjamin Klunzinger in 1871. It resembles several other species of the genus Pycnochromis, such as P. iomelas, P. fieldi, P. hanui, P. margaritifer, and P. bami.

Text from the Wikipedia article “Pycnochromis dimidiatus”, 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: 4 records
  • February: 11 records
  • March: 10 records
  • April: 39 records
  • May: 27 records
  • June: 18 records
  • July: 18 records
  • August: 28 records
  • September: 22 records
  • October: 27 records
  • November: 24 records
  • December: 8 records

Depth and water temperature

Depth

Mostly recorded at 1–27 m · Deepest record: 80 m

  • 0–10 m: 71 records
  • 10–20 m: 28 records
  • 20–30 m: 29 records
  • 30–40 m: 4 records
  • 40–50 m: 1 records
  • 50–60 m: 0 records
  • 60–70 m: 1 records
  • 70–80 m: 0 records
  • 80–90 m: 2 records

Water temperature

Recorded in surface water of 19–30 °C

  • 18–20 °C: 1 records
  • 20–22 °C: 0 records
  • 22–24 °C: 22 records
  • 24–26 °C: 62 records
  • 26–28 °C: 73 records
  • 28–30 °C: 93 records

Names and classification

English
Bicolor Damselfish, chocolatedip chromis, half-and-half chromis, Red Sea Half-and-half Chromis
Names in 3 more languages
German
Zweifarben-Riffbarsch
French
Chromis bicolore de Mer Rouge
Thai
ปลาสลิดหินตาโต

Other scientific names: Chromis dimidata, Chromis dimidiata, Chromis dimidiate, Chromis dimidiatus, Heliastes dimidiatus

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).
  • 261 open-data records from 1871 to 2021.

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