Carnegiella

Check the cover around pipes, cables and feeding openings before adding hatchetfish: a startled fish can jump through a gap. Leave suitable space at the surface and choose companions that will not harass these small fish or swallow them. Follow the named offer’s water and group guidance.

A shoal needs more than a shared temperature range. Place appropriate small foods where these surface-oriented fish can reach them, and watch for competition from faster feeders. Blackwing and Marbled hatchetfish remain separate offers; supplied size does not establish sex or a breeding group.