泰国间吸鳅

Overview

Restricted in known distribution to the upper Nan basin, Hemimyzon nanensis inhabits shallow rocky current. Aquarium preparation must provide both oxygen-rich water and established surfaces for grazing rather than circulation alone.

Distribution & habitat

Records are confined to the upper Nan, part of the Chao Phraya system in northern Thailand. At the type site, fish occupied shallow riffles about 5–10 m wide and 20 cm deep over algae-coated stones. Aquatic vegetation is generally sparse compared with bankside growth.

Aquarium setup

Use at least a 90 by 30 cm footprint with varied rounded rocks over sand or gravel. Strong filtration, circulation, and aeration should support the suggested turnover of 10–15 tank volumes per hour. Light maintains biofilm; heavily staining new wood is undesirable. Plants and accessible sponges add grazing space. Introduce fish only after maturation, retain surface growth during maintenance, and cover securely.

Diet & feeding

The probable diet includes algae and associated organisms. Suitable prepared foods and vegetable-rich gels can supplement grazing, with animal foods kept moderate. Maintain diatoms or soft green growth on rocks and replenish it from a separate culture if needed. Thin fish require reliable access to food without competitors.

Behaviour & compatibility

It is expected to be peaceful, rather than confirmed unconditionally so. Some territoriality toward conspecifics is described, alongside a recommendation for at least four together. Provide distributed feeding space and assess any proposed stream-fish companions for compatible requirements.

Notes

Pelvic fins that do not form a complete disc and a shallowly forked tail help separate the genus from some lookalikes. Unusual trade labels are not proof of identity.