European Seafood Market Watch: Why Are Plaice and Sole Moving in Opposite Directions?
- Noel
- Jun 30
- 2 min read
The Dutch auction market recently witnessed a tale of two markets. Auction data from Week 16 shows that European plaice prices have generally declined, while European sole prices have risen across the board — two benthic species in the same market heading in completely opposite directions.
What's behind this divergence?
Plaice: Small-Medium Sizes Under Pressure, Large Sizes Hold Steady
Let's start with plaice. The price decline is concentrated in small and medium sizes:
35-41 cm size: Down €1.20/kg week-on-week
31-35 cm size: Down €0.40/kg
27-31 cm size: Down €0.75/kg
41-80 cm large size: Bucked the trend, up €0.45/kg
Why this divergence? The answer lies in supply volume.
The 27-31 cm size is the highest-volume plaice grade in Europe. In Week 16, landings increased 7% week-on-week to approximately 5.9 tonnes. When supply increases in the mainstream trading size, prices naturally weaken. Meanwhile, larger sizes show significantly firmer pricing due to a different supply structure.
It's worth noting that despite the week-on-week supply increase, volumes are still down 27% year-on-year — meaning overall supply remains relatively tight, and short-term delivery rhythm is what's driving prices.
Sole: Supply Tightening, Prices Rising Across All Sizes
In stark contrast to plaice is sole. In Week 16, gutted, iced sole at the Dutch auction saw price increases across all sizes, with none of the size-based divergence seen in plaice.
Data shows that landings of 27-30 cm sole fell 20% week-on-week to 2.5 tonnes, with a year-on-year decline of as much as 38%. Rising prices coincided with reduced deliveries — a classic supply-tightening rally.
This also suggests that market demand absorption for sole is significantly stronger than for plaice.
The Market Signals Beneath the Surface
Why such divergent trends for two benthic species? This actually brings two key issues to the forefront:
First, differing demand absorption capacity. Sole appears to have higher acceptance and premium power on the consumer side — as soon as supply decreases, prices rise across the board. Plaice, by contrast, has more elastic demand, with prices coming under pressure at the slightest supply increase.
Second, delivery rhythms are significantly different. Small-medium plaice sizes have seen concentrated deliveries, creating short-term supply pressure. Sole, meanwhile, has seen an overall reduction in arrivals, creating a supply gap.
Outlook
The Week 16 Dutch auction results have sent a clear signal:
Plaice mainstream sizes are under pressure, but large sizes remain supported
The sole market continues to strengthen, with supply-side factors as the main driver
Beyond the Netherlands, the price trends of Baltic plaice caught by Danish vessels, as well as European plaice supplied by German and British vessels, also warrant continued attention.
For seafood traders and buyers, this inter-species divergence presents both challenges and opportunities — the key lies in grasping the supply-demand rhythm of different species.


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