Complex sentence: No caridean shrimps were significantly involved in aquaculture, but about 430 thousand tonnes of caridean shrimp were captured in the wild, that is, about 13% of the global wild capture, or about 6% of the total production of all shrimps were caridean shrimps.
Split into simpler sentences: No caridean shrimps were significantly involved in aquaculture, but about 430 thousand tonnes of caridean shrimp were captured in the wild. That is, about 13% of the global wild capture, or about 6% of the total production of all shrimps were caridean shrimps.