Calanoides acutus is a copepod found in Antarctica and the surrounding waters.

[1] Calanoides acutus is found in Antarctic and sub-Antarctic waters, from sea level to 1,000 metres (3,300 ft) in depth.

[1] While C. acutus is only confirmed to breed from November to March,[2] it likely starts breeding in early October, as a study observed females without eggs and late-stage nauplii presumably belonging to this copepod in mid-November.

[3] Stage I through III copepodites are generally found from sea level to 100 metres (330 ft) of depth.

[5] Individuals, mainly stage IV and V copepodites,[4] winter to between about 500 and 1,000 metres (1,600 and 3,300 ft).