[Carey]

I am not a professional maker, but have done fairly rigorous tests of Norland Fish Glue and Old Brown Glue. If I were sending instruments to very humid
places I would not use fish glue, but it's my preference between those two for its ease of use, hardness of drying, and general tenaciousness. I think fish glue is definitely more hygroscopic than hot hide glue and doesn't dry *quite* as hard, but to me it's clearly preferable to Old Brown Glue for use on musical instruments.

Adding: easy reversability and cleanup are not fish glue's strengths, and it needs plenty of clamping time.