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").
Farrell Flat not officially become Farrell Flat until 19 September 1940. The name Farrell’s Flat had been in use for some time, this being the name of the railway station. The nearby town of Davies was officially renamed to Hanson on 19 September 1940. Farrell Flat was named for Colonial Chaplain and Dean of Adelaide, James Farrell (26 November 1803 – 26 April 1869). Farrell Flat Farrell Flat (formerly Hanson) is a town in South Australia. The town is located east of Clare and southwest of Burra on the former Peterborough railway line, in the Regional Council of Goyder. At the 2006