Bengal demoiselle (Pomacentrus bangladeshius)

Classification (WoRMS)

Full classification as recorded by WoRMS: Kingdom: Animalia · Phylum: Chordata · Class: Teleostei · Order: Ovalentaria incertae sedis · Family: Pomacentridae · Genus: Pomacentrus.

Accepted name: Pomacentrus bangladeshius · Authority: Habib, Islam, Nahar & Neogi, 2020 · Taxonomic status: accepted · AphiaID: 1494020.

Source: World Register of Marine Species (WoRMS) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=1494020 (CC BY 4.0). Accessed 2026-09-23.

Biology and life history (FishBase)

Measured values published by FishBase for Pomacentrus bangladeshius. Only fields the database actually holds for this species are shown; these are database values, not aquarium guidance.

Maximum length: 7.699999809265137 cm · Habitat zone: reef-associated · Body shape: short and / or deep · Vulnerability index: 10 of 100 · Aquarium trade: never/rarely.

FishBase notes: The island where it occurs has a coral community that extends from near shore to about 200 m offshore. There are large areas of sand ridges, rocky reefs with some mangrove formations, Pandanus vegetation, and scattered boulders/dead corals are the major characteristics of this locality (Ref. 123268).

Source: FishBase species summary (SpecCode 69584) — https://www.fishbase.se/summary/Pomacentrus-bangladeshius.html (CC BY-NC 3.0 — non-commercial use only). Accessed 2026-09-23.

Description and natural history (Wikipedia)

Pomacentrus bangladeshius was identified in a study on the biodiversity of fish associated with the corals of Saint Martin's Island. This research was conducted by researchers from Sher-e-Bangla Agricultural University between 2018 and 2019 using DNA barcoding. The species was officially described in 2020 from three specimens.

Pomacentrus bangladeshius has a standard length of 67 to 77 millimeters. It has 14 spines and 13 rays in the dorsal fin, two spines and 14 rays in the anal fin, and 19 rays in the pectoral fin. It has a single, interrupted lateral line with 18 or 19 scales. The body color varies from olive to dark brown, with a dark brown premaxilla. Adults typically have a yellow iris and a bronze ring around the pupil. The maxilla reaches the front of the pupil, the lower jaw is longer than the upper, and the teeth are incisiform to conical. The tongue is triangular and positioned far back. Gill rakers are long and cylindrical, and the nostril is rounded, aligned with the lower edge of the pupil. The opercle has a flat spine, and scales extend to the nostrils, with no scales on the preorbital and suborbital areas. An axillary scale is found above the pelvic fin base.

Pomacentrus bangladeshius is a marine fish that inhabits shallow reef flats around rock and coral outcrops. It is only found on Saint Martin's Island in southeastern Bangladesh.

Source: Wikipedia: Pomacentrus bangladeshius — https://en.wikipedia.org/wiki/Pomacentrus_bangladeshius (CC BY-SA 4.0). Accessed 2026-09-23.