Another American Fisheries Society Conference #fishart piece number 6 in the series...
The deep sea Roundnose Grenadier (Coryphaenoides rupestris) is a deep sea species (~500m-2500m depths) living across the North Atlantic. It grows to about 3 feet in length and has been heavily fished since the mid 1960s. Their population has declined by 90% from the early 1970s to 2000. They undertake annual spawning migrations to colder deeper waters around Iceland and the mid-Atlantic ridge in the summer, and daily vertical migrations of up to 1000m for feeding. Because of their long lives (60+yrs) and late reproductive maturity (~10-12yrs) along with heavy, largely unregulated fishing their population declines are unlikely to recover soon.
FAO Fact Sheet: http://www.fao.org/fishery/species/3035/en
Canadian Endangered species summary: https://www.sararegistry.gc.ca/virtual_sara/files/cosewic/sr_roundnose_grenadier_0809_e.pdf