Fish maws
From Cargo Handbook - the world's largest cargo transport guidelines website
The sacks in which fish maws are sometimes shipped may bear evidence of staining, giving the appearance of contact with water or a damp surface. The maws adjacent to the stained areas may have patches of white and green mould, together with pink discolouration. This damage may be caused by high moisture content when packed, leading to mould and bacterial attack, and not due to any fortuitous cause.