Avoid holding unique species under the exact genus jointly, as they could create unwelcome hybrids. The Marbled Hatchetfish you currently locate during the trade are wild-caught, so we suggest quarantining them in advance of incorporating them towards your main tank. I also included a online video from our YouTube Channel https://fishpondcleaningservice.blogspot.com/2023/01/cleaning-and-maintaining-your-fish-tank.html