As an alternative, they have a black “skin” along with a slim body that’s shaped just like a knife (therefore the name). Their tolerance for lower-mild environments has presented them the ability to use electromagnetic fields for navigation—comparable to eels! Similar to the Zebra Plecos, the Black Ghost Knifefish likes https://albinostingrayfish.blogspot.com/2022/10/how-to-set-up-aquarium.html