It's really hard to catch one fish. The two new female barbs still have pale marks on their tails- the second one it showed up yestserday, more an indistinct blotch than clear oval shapes like on the other one. Maybe it's a fungus. I don't know now. Yesterday I managed to catch both fish with a net and gave them a thirty minute salt bath. They did ok, swam about slowly in the bucket close to each other. Today it was a different matter. Both very wary of the net.