Ann: Clean Seas Seafood Delivers $3.4m FY18 Profit, page-2

Good increase in sales volumes expected in 2018/19, not going crazy at an average 2,875 tonnes.

The thing that struck me was the big increase in animal husbandy costs (presumably mostly feed cost increases?).
If you take the fish sales less animal husbandy costs to get a margin the % has fallen from 36.3% to 27.7%.
Frozen fish margins are pretty stable 26.5% vs 25.6% so it's not anything to do with frozen margin. If anything frozen margins should be higher due to lower inventory clearance & new deep freeze product.

Also big increases in employees costs & depreciation, presumably due to production ramp up.

CSS is always going to be difficult company to put any sort of profit forecast together due to the fair value adjustments for biological growth.
My estimate for 2019 would be a profit of around $7.0m assuming they sell 2,875 tonnes & have normal growth conditions.
At a PE of 15 that puts fair value at 6.3c, bang on the current sp.
Forecasting anywhere ahead of a year is a folly with such big variables.