Showy bristlemouth

Cyclothone signata

Fish
IUCN: Least concern

Usual depth208–1,200 m
Water temperature13–29 °C
Best monthsApril, July, and October
How commonCommon

All species

Photo credit: (c) Christopher Martin, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

Cyclothone signata, the showy bristlemouth, is a species of ray-finned fish in the genus Cyclothone.

Text from the Wikipedia article “Cyclothone signata”, 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: 678 records
February: 532 records
March: 347 records
April: 921 records
May: 286 records
June: 249 records
July: 763 records
August: 502 records
September: 267 records
October: 718 records
November: 357 records
December: 128 records

Depth and water temperature

Depth

Mostly recorded at 208–1,200 m · Deepest record: 2,730 m

0–10 m: 3 records
10–20 m: 0 records
20–30 m: 0 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110+ m: 125 records

Water temperature

Recorded in surface water of 13–29 °C

12–14 °C: 30 records
14–16 °C: 164 records
16–18 °C: 410 records
18–20 °C: 211 records
20–22 °C: 36 records
22–24 °C: 6 records
24–26 °C: 4 records
26–28 °C: 11 records
28–30 °C: 3 records

Photos

Names and classification

English: Showy bristlemouth, showy bristlemouth

Names in 2 more languages

Spanish: Pez Luminoso
French: cyclothone prétentieuse

Similar species

Benttooth bristlemouth
Cyclothone acclinidens
Albino anglemouth
Cyclothone alba
Deep-water bristlemouth
Cyclothone atraria
Spottail anglemouth
Cyclothone braueri
Veiled anglemouth
Cyclothone microdon
Bicolored bristlemouth
Cyclothone pallida

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).
8,649 open-data records from 1899 to 2023.
Species data updated November 1, 2026.

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