Little Wigglers!

Within two days, the eggs will begin to hatch. The babies are not much larger than a pinhead and can't survive - or even swim - at this stage.

So when they hatch, the parents pick them up in their mouths and spit them onto another vertical surface, one they have been cleaning while waiting for their eggs to hatch.

The angels adhere to this vertical surface by their heads. They wiggle and wiggle while they grow for another day or two.

At this stage, they are called "wigglers" and the parents become even more protective of them because they are completely helpless.

You might be tempted to think these are eggs that have grown. But if you look closely you'd be able to see them wiggling.

The video below illustrates this.