I've been trying to keep these little guys alive for some time now maybe 2 weeks.
Things seem to be doing very very well.
A C6 momma copepod big enough to see. She's about 0.7mm big, is swimming above the marimo ball.
In the middle is a copepod C1-C4 it has grown it's 4th segment and tail.
Adult copepods have 6 stages of life denoted by c1 through c6. The juvenile copepods are denoted by n1-n6. They have 12+1 stages of life. 12 metamorphosi and their breeding phase. In the microscopic picture the large c1-c4 copepod is about 0.2 mm large. There are smaller round n1-n6 copepods on the lower have of the picture.
Copepods!!: Copepods!! - YouTube
These two are fighting over a piece of phytoplankton aha