Maurice Shema

So they build nests on the bottom of a pond or stream also to get the moms to want to lay eggs.

And they use bits of plants that they glue together with a sticky substance that is called spiggan.

It's made out of protein-based mucus.

Okay.

And so they build these nests, and then they do these zigzag dances.

Like, they do dances when they see a female with a belly full of eggs to try to get her to lay the eggs in the nest.

And then she goes, and the dad will take care of them and sort of take them the rest of the way.

Can I jump in, Eduardo?

Yeah, go ahead.

There was this study by another colleague.

Like, there was one experiment that took dads and watched how their brain activates when they see and play with their baby.

And?

You would see activation in the really old parts of our brain.

And another scientist... Called Kumi Kuroda, and she was trying to isolate what part of the brain was responsible for nesting behavior.

And she had concluded that the first sort of parental instinct, the first nesting behavior, was male fish millions of years ago.

And it was only then when we came on land and, you know, had the babies outside the body and had to breastfeed that these other parts came in.

But one of the big lessons of all of this was, you know, get in touch with your inner fish.

We all have that kind of biology and it's really, really old.

It's deep.

Yeah.