马拉维湖双锯鱼属（慈鲷目：慈鲷科）一新种。

A new species of Diplotaxodon (Cichliformes: Cichlidae) from Lake Malaŵi.

机构信息

Penn State University, 432 Forest Resources Building, University Park, Pennsylvania 16802, USA. Honorary Research Associate, South African Institute for Aquatic Biodiversity, Makhanda, RSA..

出版信息

Zootaxa. 2021 Jan 7;4903(2):zootaxa.4903.2.7. doi: 10.11646/zootaxa.4903.2.7.

DOI:10.11646/zootaxa.4903.2.7

PMID:33757100

Abstract

A species of haplochromine cichlid fish of the genus Diplotaxodon Trewavas, endemic to Lake Malaŵi is described: Diplotaxodon dentatus, new species. All eight type specimens were trawled together off Thumbi East Island in the Southeastern arm of the lake at 73 meters in 1985. They were initially identified as D. argenteus because the teeth on the oral jaws were fully exposed with a closed mouth. The shorter snout length of D. dentatus (26.6-29.2 % HL) clearly separates it from D. argenteus (31.7-34.2 % HL). A plot of a principal components analysis further supports the separation of D. dentatus from D. argenteus.

摘要

描述了马拉维湖特有坦噶尼喀丽鱼属的哈氏丽鱼一种

锯齿唇丽鱼，新种。1985 年，在湖东南臂的Thumbi East 岛附近 73 米深处用拖网捕捞到所有 8 个模式标本。因为闭口时口腔颌骨上的牙齿完全暴露，最初它们被鉴定为 D. argenteus。锯齿唇丽鱼的吻长较短（26.6-29.2%HL），这与 D. argenteus（31.7-34.2%HL）明显不同。主成分分析图进一步支持锯齿唇丽鱼与 D. argenteus 的分离。