Macrourus berglax shrimps, amphipods, polychaete worms, bivalve molluscs, isopods, brittle stars, other echinoderms and comb jellies. The roughhead grenadier is a slow growing fish. The females mature at an age of about 14 years and a length of while males reach maturity at a length of . The potential fecundity of the female is 17,000 to 56,000 eggs. The eggs are laid in batches and spawning takes place at any time of year, with a peak in late winter and early spring. The roughhead grenadier is landed as a by-catch when fishing for Greenland halibut ("Reinhardtius hippoglossoides") and Atlantic halibut ("Hippoglossus hippoglossus").
Pacific sand sole fish, worms, crustaceans, and molluscs. Pacific sand sole The Pacific sand sole, "Psettichthys melanostictus", is the only fish in the genus, "Psettichthys", in the, "Pleuronectidae", family. It is a flatfish and inhabits northeastern Pacific waters where it lives on sandy bottoms. The Pacific sand sole, belongs to the order "Pleuronectiformes," and the family "Pleuronectidae". They are considered a flatfish due to their body shape, just like Hippoglossus (halibuts), Solea (soles), and Platichthys (flounders). This fish can get over 62.95 cm (24.78 in) in length and on average this fish can weigh approximately 2.484 kg (5.476 lbs). Their dorsal side, which