another free bump. but depending on the lei, i doubt it'd work with the black. tried mine with a silver twice already, he just beats up the silver every time its in the tank.
Don't know if this helps any..... Right now the Lei is in a tank with my African Aro at 14", 36 Clown Loaches ranging from 2-6 inches 10 Indo Dats all about 1.5-2.5 inches and 4 silver Dollard that are bigger than my palm.
I have witnessed ZERO aggression at this point. Not that it can't happen, but so far super good in my tank.