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<p>The catfish genus <i>Pseudecheneis</i> consists of small freshwater catfish that live at the bottom of fast-flowing streams. The genetic information carried by extant freshwater fish can provide new insights into deciphering the evolutionary processes of rivers. However, existing studies often rely on limited molecular markers, which are insufficient to thoroughly resolve genetic information and complex evolutionary relationships. We have deciphered the first high-quality Telomere-to-Telomere (T2T) chromosome-level genome of <i>Pseudecheneis</i>, with a genome size of 574.82 Mb and a contig N50 of 22.76 Mb. A total of 19,787 protein-coding genes were annotated, of which 98.4% were successfully functionally annotated. This study provides important references for clarifying the phylogenetic relationships and evolutionary history of <i>Pseudecheneis</i>, and also offers valuable data support for exploring the interrelationships among structure, function, and adaptation.</p>

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Telomere-to-telomere genome assembly and annotation of the Pseudecheneis paviei (Teleostei: Siluriformes)

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月20日

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  • Zhen Peng,
  • Rui Li,
  • Wei Dao,
  • Xu Li,
  • Chaoyong Xiong,
  • Ruobing Han

摘要

The catfish genus Pseudecheneis consists of small freshwater catfish that live at the bottom of fast-flowing streams. The genetic information carried by extant freshwater fish can provide new insights into deciphering the evolutionary processes of rivers. However, existing studies often rely on limited molecular markers, which are insufficient to thoroughly resolve genetic information and complex evolutionary relationships. We have deciphered the first high-quality Telomere-to-Telomere (T2T) chromosome-level genome of Pseudecheneis, with a genome size of 574.82 Mb and a contig N50 of 22.76 Mb. A total of 19,787 protein-coding genes were annotated, of which 98.4% were successfully functionally annotated. This study provides important references for clarifying the phylogenetic relationships and evolutionary history of Pseudecheneis, and also offers valuable data support for exploring the interrelationships among structure, function, and adaptation.