My Niger came from copper. I just acclimated in the bag and then put him in without letting my net touch my water. I always wondered that do they hold? Like if i go tomorrow and find one, have them hold till the following week? my normal place does that, but i havent bought fish regularly at critter since i got my blood parrots in my fresh tank. Id likely put them in my QT tank anyways, so not as big of deal.