well....sad news, it didn't make it. RIP...it's 8" long.
there's no sign of aggression from the silver, if I have to say, the black is the more aggressive one, once it actually chased the silver away from where it usually hangs, that's the only time I noticed if there's any aggression between them.
there's no spit fins other than the couple small ones it already had before I add the silver. probably from running into plants or driftwoods when I was doing water changes.
I hope it's nothing caused by my water and I hope my silver will make it, so far it's doing fine and still very active.