Why is the Banggai cardinalfish unusual for a cardinalfish?

It is the only member of the cardinalfish family Apogonidae known to be diurnal; nearly all its relatives are nocturnal, hiding in crevices by day and feeding at night.

Why is the Banggai cardinalfish endangered?

It is endemic to a tiny area of Indonesia's Banggai Archipelago, and heavy collection for the aquarium trade—up to 900,000 fish exported per year in the early 2000s—caused population declines of over 90% in some areas.

Banggai Cardinalfishバンガイカーディナルフィッシュ

Pterapogon kauderniEN— Endangered

The Banggai cardinalfish is a small, strikingly patterned reef fish endemic to Indonesia's tiny Banggai Archipelago, unusual among cardinalfish for being active by day rather than at night. Males mouthbrood their eggs for weeks without eating, but the species' extremely limited range and heavy collection for the aquarium trade have pushed it to Endangered status.

Banggai Cardinalfish (reference photo) — Photo: jon hanson from london, UK / CC BY-SA 2.0 / Source / cropped

Species Data

Classification: Perciformes / Apogonidae Source
Distribution: Endemic to Indonesia's Banggai Archipelago and adjacent waters, with an extremely limited range of roughly 5,500 square kilometers. Source

Did You Know?

While most cardinalfish are nocturnal, this species is the only member of the family Apogonidae known to be diurnal, active during the day in shallow, calm reef and seagrass habitats. Source
Males are mouthbrooders that carry fertilized eggs in their mouths for up to about 30 days without feeding; clutches are small, no more than 90 eggs, each 2 to 3 mm in diameter. Source
Driven by aquarium trade demand, 700,000 to 900,000 fish were exported annually between 2001 and 2004, causing declines of over 90% in some populations and the extinction of at least one local population. Source

Where to See This Species

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Conservation Story

Conservation Status

IUCNレッドリストではEN。狭い分布域での観賞用採集と生息地劣化が保全上の課題となる。

Habitat

インドネシア・バンガイ諸島周辺のごく狭い浅海。

Threats

狭い分布域での観賞用採集と生息地劣化

Conservation & Breeding Efforts

生息地の保全と個体群の継続的な把握
飼育下繁殖が行われる水族館では、口内保育という独特の繁殖行動と保全の課題を学べる。

Sources

en.wikipedia.org

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FAQ

Why is the Banggai cardinalfish unusual for a cardinalfish?: It is the only member of the cardinalfish family Apogonidae known to be diurnal; nearly all its relatives are nocturnal, hiding in crevices by day and feeding at night. Source
Why is the Banggai cardinalfish endangered?: It is endemic to a tiny area of Indonesia's Banggai Archipelago, and heavy collection for the aquarium trade—up to 900,000 fish exported per year in the early 2000s—caused population declines of over 90% in some areas. Source

Source: en.wikipedia.org