Key challenges will be success in catching pelagic species such as squid, skipjack tuna and mackerel, while managing issues such as virus infection in oysters and barnacles on mussels that result in the meat having to be used for lower value products, he said.
The second half of the year was also marked by a $5 million jump in repair costs for Sanford's Pacific tuna fleet, which also had the effect of reducing days at sea when tuna prices were at record highs, the company said.
Two vessels were detained in American Samoa capital Pago Pago, the San Nanumea related to injury claims from current and former crew, and the San Nikunau for failing to properly document oily water discharges. The company couldn't currently quantify the potential costs.
Sanford's aquaculture business benefited from record-high prices for salmon early in the year, which have since declined. The company had "reasonable harvests" of mature oysters, again sold at record prices, though the virus affecting the Pacific oyster "is decimating the young crops being grown for future years."
"There is a sense that for some species, prices have peaked and there may be potential softness ahead," Barratt said.
Still, the company is confident major species that generate the bulk of sales - hoki, Greenshell mussels, ling, toothfish and skipjack tuna - "will hold their price levels and enable us to earn improved returns," he said.
Shares of Sanford last traded at $4.40 and have slipped about 8 per cent this year. The stock is rated 'underperform' based on four recommendations compiled by Reuters.