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Length‐to‐weight and length‐to‐length ratios of six cavefish species from the Pearl River Basin, South China
Author(s) -
He Anyou,
Li Yusen,
Zhou Lei
Publication year - 2021
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.14108
Subject(s) - pearl , biology , cave , drainage basin , fish <actinopterygii> , fishery , ecology , cartography , archaeology , geography
Length‐to‐weight and length‐to‐length ratios were estimated for six cavefishes including Yunnanilus longibarbatus , Yunnanilus bailianensis , Yunnanilus jinxiensis , Oreonectes polystigmus , Paranemachilus pingguoensis , and Paranemachilus genilepis from the upper reaches of the Pearl River, Guangxi Province, China (between 106.26E, 23.14N and 111.42E, 24.85N). The fish were captured between May and October in 2018 and 2019 using trap nets (mesh size 7 mm) set in front of selected caves at 6:30–7:30 p.m. and were hauled out at 6:30–7:30 a.m. the next day. After removal, the fish were measured and weighed immediately to the nearest 0.1 cm and 0.1 g, respectively. The regression parameter r 2 was between .95 and .98. The total length‐to‐standard length ratios were also calculated with r 2 ≥ .98. This study should provide a useful reference for biological studies and biodiversity conservation of cavefish.