Norway-based Sterling While Halibut posted black figures in 2016, the result of huge biomass write-downs and restructuring by new management.

While bottom line earnings weren't eye-popping -- net profit was at NOK 5.1 million (€561,000/$612,000) -- operating earnings were at NOK 13.9 million (€1.5 million/$1.7 million), a 19.1 percent margin.

More impressive, perhaps, was the steep turnaround from a dismal 2015. Revenue was up 25 percent to NOK 72.9