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© 2019 by Jeffery Chan

Three-lines Bagrid Fish (Pseudobagrus trilineatus)

Updated: Aug 30, 2019

A very rare and restricted native catfish, found only in 2 localities in Hong Kong.

A primarily nocturnal species, this specimen was found sleeping in a crevice under some roots during the daytime.

Identification: Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal soft rays: 18 - 19. Nude without scale, complete lateral line. Well developed dorsal fin, adipose fin about 1.4-2.8 times the length of the dorsal fin, nearly arc-shaped. Yellowish brown in color, with three dark yellowish lateral strips in the side. One of the strips along the lateral line is discontinued (Fishbase).


Habitat: Found only in 2 localities in Hong Kong. They reside in clean hillstreams and seem to prefer hiding among dense tree roots during the day.


Distribution:

AFCD: N/A.

Personal experience: A very rare species due to their low abundance and restrictiveness. I've only found 3 specimens thus far, all within the roots of trees in moderate depth hillstream pools.


Conservation concern:

Fellowes et al. (2002)- Global Concern

Red List of China's Vertebrates - Near Threatened AFCD- Species of conservation concern

Personal Note: This species is often seen in Hong Kong wetmarkets, as well as occasionally being sold as ornamental fish at Tung Choi Street. However, it is likely those those specimens are farmed or exported, and not extracted from native populations. Local threats include habitat destruction and pollution. ​


Useful links:

https://www.fishbase.se/summary/55078

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