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玩缸知识库

台湾细鳊

台湾细鳊

概要

字段值
类别鱼
学名Metzia formosae
别名海南石川鱼、小细鳊、车栓仔、台湾黄鮰鱼、台细鳊、台灣細鯿、海南石川魚、小細鯿、台灣黃鮰魚(台湾)、車栓仔(台湾)、台細鯿(香港)、Rasborinus formosae、Ishikauia hainanensis、Metzia fanlingensis、Rasborinus yaii
分类鲤形目 Cypriniformes › 鲤科 Cyprinidae › Metzia
水体淡水
原产地中国大陆、香港及台湾,越南
成体体长7.5 cm
饲养难度中等
群居方式群游
外部数据seriouslyfish metzia-formosae;fishbase 60269

概述

台湾细鳊(Metzia formosae)体型小,口向上,体侧有一条从鳃孔后缘延伸到尾鳍基部的黑色纵带。这一条纹与上位口的组合,是辨认时较直观的线索。

分布与栖息地

记录来自台湾北部、海南、香港、广西和广东的珠江流域,以及云南和越南北部的红河水系;老挝可能也有分布,但尚不确定。

生活在缓流至静水环境,包括小溪、支流、稻田、岸边沟渠和灌渠。水可以清澈,也可能浑浊,常有丰富水草或岸边植被。

雌雄区分

成熟雌鱼通常比雄鱼身体更高、更厚实。

补充说明

所属类群的分类关系尚未完全厘清,可能涉及不止一条演化支系。辨认应结合上位口、体侧纵带和完整侧线,不能只凭“细鳊”一类外形称呼确认物种。

图片

图片来自 SeriouslyFish,版权归各摄影者所有。

台湾细鳊
Specimen from northern Taiwan. · 摄影:Yung-Ching Chang
台湾细鳊
Specimen from western Hainan Island, China. · 摄影:Marco Endruweit
English

Overview

An upturned mouth and a dark flank line extending from behind the gill opening to the tail base are conspicuous features of Metzia formosae. Their combination is more useful than a general resemblance to other small silver fishes.

Distribution & habitat

Records include northern Taiwan, Hainan, Hong Kong, the Pearl basin in Guangxi and Guangdong, and the Red River system in Yunnan and northern Vietnam. Occurrence in Laos is possible but not confirmed.

Slow streams and still-water habitats are used, including minor tributaries, rice fields, canals, and marginal ditches. Water may be clear or turbid, with abundant aquatic or bankside vegetation.

Sexual dimorphism

Adult females tend to develop a deeper body than males.

Notes

Relationships within the genus remain unresolved and may involve more than one evolutionary lineage. Identification should consider the mouth position, flank stripe, and complete lateral line rather than relying on a broad body-shape label.

来源

ID: metzia-formosae · 文件: data/species/metzia-formosae.md · 状态: 草稿