The article:

Microbrachius means “little arms” and refers to the genital limbs that locked male and female fish together when mating. And dicki means – that’s right, you guessed it.

The wiki:

It is named after its discoverer, Robert Dick.

Turns out I didn’t guess it after all.

Can you eli5 for a non-geology person what the game did wrong? And maybe what the hell a thalweg is?

Asking for a friend. I definitely already know what a thalweg is, I just want to make sure you know!