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玩缸知识库

Colomesus tocantinensis

Colomesus tocantinensis

概要

字段值
类别鱼
学名Colomesus tocantinensis
分类鲀形目 Tetraodontiformes › 四齿鲀科 Tetraodontidae › Colomesus
水体淡水
原产地巴西托坎廷斯州国民港附近的托坎廷斯河
成体体长3.5 cm
饲养难度中等
群居方式群游
外部数据seriouslyfish colomesus-tocantinensis;fishbase 69136

概述

Colomesus tocantinensis 是巴西的小型淡水河鲀,可能尚未进入观赏鱼贸易。背部浅黄、具五道暗横带,下颌没有横向皮瓣,是辨识时可留意的特征。

分布与栖息地

目前仅知模式产地,即巴西托坎廷斯州国民港附近的托坎廷斯河。

繁殖

本种繁殖方式尚未明确,不能直接套用近缘鱼漂流幼体进入泛滥区的繁殖策略。

补充说明

鳃盖下缘有缺刻,外形近倒 V 字,背鳍和臀鳍鳍条数也较少,可与近似种区分。已知标本尺寸不代表可靠的成体上限,它可能继续长大。

图片

图片来自 SeriouslyFish,版权归各摄影者所有。

Colomesus tocantinensis
Holotype specimen; PNT.UERJ.405. · 摄影:Amaral et al.
Colomesus tocantinensis
Paratype specimen. · 摄影:Amaral et al.
English

Overview

A small Brazilian freshwater puffer, Colomesus tocantinensis may not yet have entered aquarium trade. A pale yellow back with five dark crossbands and the absence of chin flaps are useful identifying features.

Distribution & habitat

The only known locality is the type site in the Tocantins River near Porto Nacional, Tocantins State, Brazil.

Breeding

Reproduction is unknown. A relative’s strategy of drifting larvae entering floodplain nurseries should not be assumed to apply here.

Notes

A notch along the lower opercular edge creates an inverted-V outline, and relatively low dorsal and anal ray counts help separate it from similar species. Available specimen sizes do not establish a dependable adult maximum; larger growth is expected.

来源

ID: colomesus-tocantinensis · 文件: data/species/colomesus-tocantinensis.md · 状态: 草稿