The ridge scaled rattail[2] or ridge-scaled grenadier,[3] Macrourus carinatus, is a species of deep-water fish in the family Macrouridae.

[2] In the waters of the Falkland Islands, females reach 50% maturity at 21 cm (8.3 in) pre-anal length and 14 years of age.

Males reach 50% maturity at 16 cm (6.3 in) pre-anal length and 12 years of age.

[2][3] Targeted fishery along the Patagonian continental slope reached a peak of 50,000 tonnes in 1988 but declined precipitously thereafter.

At present, it is treated as a by-catch species that is not allowed to exceed 10% of daily catches in weight.