I love watching the little critters in my shrimp tank. Sometimes they're more interesting to watch than the shrimp!
Interesting in deed, I used to watch Copepods carried their egg sacks swimming along the glass during cycling period. Now, the fish had moved in a week ago, I hardly see any copepods nor any other type of critters swimming around
A healthy tank should have lot's micro-life forms and those critters are good snakes for fish.
Btw, I have a pair cheery shrimp in my nano tank, the female carrying egg sacks at the moment. Can't wait to see my first baby shrimps !
How's your shrimps doing, Kehy ?