noun
brownstriped mackerel scad; Decapterus muroadsi
Specific species of mackerel scad; scientific name Decapterus muroadsi.
この辺りではムロアジがよく釣れる。
Brownstriped mackerel scad are often caught around here.
noun
mackerel scad; Decapterus spp.
General term for any fish of the genus Decapterus; includes several species.
ムロアジの仲間は世界中の暖かい海に分布している。
Mackerel scad species are distributed in warm seas around the world.
The origin of むろあじ is uncertain. The kanji 室鯵 literally mean 'room horse mackerel,' but this is likely ateji and not directly related to the meaning.