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Scientists Discover Two New Fish Species in the Pearl River

  • September 4, 2024
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Researchers from Shanghai Ocean University and Yunnan Agricultural University have discovered two new types of wool: Beaufortia granopinna and Beaufortia viridisIn the Upper Pearl River system of southwest

Scientists Discover Two New Fish Species in the Pearl River

Researchers from Shanghai Ocean University and Yunnan Agricultural University have discovered two new types of wool: Beaufortia granopinna and Beaufortia viridisIn the Upper Pearl River system of southwest China. Research led by Jing-Cheng Chen provides new insights into the taxonomy and molecular phylogeny of the species group Beaufortia ping and highlights the critical need for habitat protection due to environmental threats.


Unique features of Beaufort species

Beaufortia granulopinna It is distinguished by prominent tubercles or rounded tubercles on the first 6–9 rays of the pectoral fins in adults and by a unique pattern of blurred or absent vertical stripes on the median portion of the lateral trunk after reaching maturity. The species name “granulopinna” comes from the Latin words “granulo” (granular) and “pinna” (fin), reflecting the bumps on the fins.

Beaufortia viridis characterized by successive vertical stripes of the same length, width and distance in all stages of growth, as well as a bright dark blue to green body color. The species name “viridis” comes from the Latin word for “green”.

Beaufortsia is green
Lateral (top), dorsal (middle), and ventral (bottom) views of Beaufortia viridis from the Wuming River, a tributary of the Yu River in the Pearl River Basin, Wuming County, Nanning City, Guangxi Province, China. Authorship: Chen et al.

Observation of habitat and behavior

These species show significant morphological specializations, including a compressed body, a flattened ventral surface, and greatly enlarged paired fins forming a suction cup-like structure. These adaptations allow them to adhere to rocky surfaces, resist currents, and feed on algae and invertebrates.

The discovery was made during surveys of aquatic life in several waterways in Yunnan and Guangxi between 2022 and 2024. During these studies, some fish exhibited strong territorial behavior, spreading their fins and head-butting rivals to drive them away.

Conservation issues and opportunities

The discovery highlights the rich biodiversity of the upper Zhujiang system and underlines the importance of continued taxonomic and molecular research to understand and protect these species. Group species Beaufortia ping They are popular ornamental fish in China and contribute significant profits to the aquarium trade. However, unsustainable harvesting practices threaten their populations. Their vulnerability to pollution and changes in water quality are further exacerbating their decline.

In typical location of B. viridis sp. November, Many small river tributaries in Wuming District, Nanning City have been converted into water storage tanks, and those near farmland have been polluted and rendered uninhabitable. Interestingly, a stable population was found in a commercial eco-camp where parts of the river were left undeveloped, providing refuge for this species.

Researchers stress that more attention should be paid to these species, more research should be conducted and habitats should be protected. Sustainable planning and development are crucial to ensure the harmonious coexistence of people and nature.

Source: Port Altele

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