I doubt they will live. Keep a gentle current and lots of water changes. Spot feed with a small syringe, I would feed crushed egg yolk mixed with tank water(to soften), garlic guard, and hikari first bites. I doubt feeding BBS would work. Put lots of plants in and provide them with a small tank with a sponge filter or micro filter. Also I would not put a substrate in as they may harm themselves resting on it. If they survive you will have to be constantly spot feeding. That is the reason I suggested a small tank so they have appropriate food density and aren't harmed by other fish.