Silversides are a SW fish related to sardines (i think). They should be available at your LFS.what is a silverside? is it a kinda of feeder fish???
Also, screw the tongs, don't waste your money. Just use chopsticks. Or just let it sink close to the fish. Or you could try the "tie it to a string" method. I recommend trying to get your fish to eat pellets as well. Soak the pellets in fish or shrimp juice and it might accept them. And crickets and earthworms are a great start as well.