May 16th
We will call these guys '0' day old (first day free swimming)
The aquarium is dirty. I don't do many water changes, hoping they attach
Here is my timeline.
Most people seem to go by 'free swimming' for aging (from what i can tell)
Mine lay eggs. 55 hours they will hatch. roughly 4 days of 'wiggling' on the side of the cone is followed by 48 hours wandering the tank before they attach (above)
You could easily argue these are a week old, but one day 'free swimming'
You will notice only the male in these pictures. My female eats the eggs about 40% of the time, so I often remove her. This male is an excellent parent