Even Brick is curious about the fry and scans the sand. Boss is searching too. Fortunately the Oscar isn't pressed about meals too small to care about.
Pip's fry are getting more independent roaming the tank. I've been practicing netting them. They're easier to catch when they aren't clustered in a group. They get kind of disoriented being lost in the tank. Pip is starting to take 'breaks' from fry sitting. But anyone getting too close gets popped. She cruises the tank looking for strays.
Their high survival rate so far (besides their convict wannabe mom) is because the fish with big enough mouths to eat them are too slow and can't maneuver. The fish with speed to catch them don't have big enough mouths to do anything. My Acara Jazz is the one I keep an eye on. She's the only one fast enough with a big enough mouth. And trust me, she tries. Tank size and hiding places have frustrated her.
The growth is accelerating as the fry have doubled in size (1/4 to ~1/2 inch) the last few days. Plus, eventually they'll be large enough to make Brick get serious about snacks (not to mention the bioload issue).
A comparison of Boss's color by exposure and light conditions. First pic is full daylight mode neutral white (12pm -3pm) Nicrew LEDs. Second pic is in late evening mode blue violet (9pm - 12 midnight). Tank goes dark after midnight. Photographing him under evening mode is tricky because his color is so bright there's a haze that forms making shots look out of focus. No flash was used. I have custom settings on the LEDs.