Q: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
The shrimp and the surface mucus layer and eggs of the catfish contain carotenoid pigments which seem to cause the golden colour of the shark .
A:
The shrimp and the surface mucus layer and eggs of the catfish contain carotenoid pigments that appear to be the source of the sharks ' golden color ; whether the pigments in the catfish also ultimately come from the shrimp is uncertain .