I only able to buy the frozen bloodworms(commercial package) from my LFS. Actually I feel quite troublesome to feed my goldfish with fresh live food. However, I heard most of the goldfish enthuasists claim that "live food is a must" to raise the goldfish to their full potential.

So you are more into tropical fish and planting tank. Glad to meet you here and thanks for your reply too. I too raised tropical fish before, unfortunately now fall in deep love with goldies... (poisoned by them already).

So happy tetras keeping!