Does the fish have small white pustules (pimple-like) on skin and fins, the pustules being consistent in size and shape?

No.

Yes: fish has ick (ichtyophthirius), a most serious disease. Almost all cultured fish are susceptible. Note: Some fish do not develop pustules on skin. Heavy infections may be on gills and show no evidence of disease on other parts of the body.

More information about Ick is available.