The shallow-water flatfish stock complex in the Gulf of Alaska (GOA) includes Alaska plaice (Pleuronectes quadrituberculatus), butter sole (Pleuronectes isolepis), English sole (Parophrys vetulus), sand sole (Psettichthys melanostictus), starry sole, yellowfin sole (Pleuronectes asper), northern rock sole (Lepidopsetta ploystra), and southern rock sole (Lepidopsetta bilineata). Northern and southern rock sole are tier 3 species and assessed separately from the other shallow-water flatfish. The shallow-water flatfish stock complex has been moved to a 4-year assessment cycle. Last year, 2017, was the first year of the new schedule and a full assessment was completed. This year a partial assessment was done.