A paper published in the journal Aquaculture claims that Bd was detected in farmed crayfish and that Bd causes mortality, pandemics and massive economic losses to aquaculture. The abstract of the paper can be found here. Unfortunately, there are several problems with the study. For example, infections do not look like typical Bd infection. While there are some papers on Bd in crayfish (here), the new paper provides no strong new evidence for Bd in crayfish.
Picture from https://en.wikipedia.org/wiki/Macrobrachium_rosenbergii.