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").
Flat Islands (Antarctica) Antarctic Names Committee of Australia (ANCA) recommended in 1958 that the descriptive name Flat Islands be applied for the entire group. The group is made up of Stinear Island and Béchervaise Island, amongst others. Flat Islands (Antarctica) The Flat Islands or Flatøyholmane are a small chain of islands which extends in a northeast-southwest direction, lying about north-west of Mawson Station and southwest of Welch Island in the eastern part of Holme Bay. The Flat Islands were mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition (1936-1937) and the name Flatøyholmane (the flat island islets) was applied