nuclear families?

[Hybridfish7]

So as noted in one of my other posts, my nanolutea have spawned, with their few month old fry still in the tank. My first concern was the first batch getting killed by the parents. This was not the case, the pair doesn't even defend the nest from the juvies. My second concern was the first batch eating their younger siblings or the eggs. This also, surprisingly, was not the case.
The pair came up to the glass to defend their nest against >me<, and I noticed a juvie in the back by the nest up by the eggs. I was concerned, I thought it would start eating them or something, but no. The little thing was fanning the eggs to the best of its tiny body's ability while its parents tried to fend me off.
I know it's not unheard of for pairs of CA cichlids to spawn with their fry still in the tank, but the fry taking care of their siblings too? Should I be studying and recording my findings of this behavior?

 

[Hybridfish7]

Here we are, a short video of the juvies "fanning" the eggs while mom and dad were away

I have seen behavior where smaller fish, sometimes even older offspring of some, will rush into an unguarded nest to feed on eggs and fry. However, while I am noticing less eggs than yesterday, I am also noticing that the movements of these juvies matches that of the fanning of the mother, and as you can see in the video one of the juvies picks at the clutch but doesn't appear to be taking off any healthy eggs, nor does it go back to continue picking.
Going back to the bit about smaller fish rushing into unguarded nests, I fed them, and the whole family just leaves the nest to eat. The pair left and the juvies followed. If the intention was to grab eggs while the nest was unguarded, why would they swarm across the tank for food? I don't have a regular feeding schedule on the tank, and it was earthworm flakes. To me at least, eggs would seem much more valuable nutritionally, especially for small growing fish.
There are around 30 eggs and 30-40 juveniles.

 

[Jexnell]

My Nanos have just started to pair and breed, I will have to see if the same happens.
I have one pair so far, and another 2m/2fm that have not paired up in a 6ft 125gal.
The pair has now laid 2 batches of eggs that didn't make it to hatching. They guard the cave like crazy so I believe its just new parents learning.

 

[Deadeye]

I’ve had cichlids (kribs) breed while young were still with them. Haven’t seen anything like that though.