If you are cycling with this shrimp it won't last long....but if you mean you used the goldish to cycle and now have a stable tank then I can answer your question. Bamboo shrimp have fan like appendages that they use to grab stuff out of the water...effectively "filter feeders". I had a couple in one of my freshwater tanks years ago and they always hung out on by the hang on filter outlet trying to grab little pieces of food. Neat shrimp and no threat to anything in the tank. They do need really good water conditions however, like most shrimp species but also need a food source small enough for them to eat or they will stave. Goldfish being as messy as they are I probably wouldn't recommend keeping this species, and really any shrimp species with goldfish(depending on the size, maintenance, and other factors of the tank)
I've never seen them be agressive and at the time I had them with a bunch of small neon tetras and other small fish.... I'm not really sure how they would physically even be able to hurt another fish. Definetly a cool species, mine stayed alive for about a year then died in a CO2 overdose accident. Just seeing this thread is making me want to order a few more, where did you get yours from?