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.
ChaoticNeutralCzech@feddit.org 10 months ago
Unfortunately for him, the 19th century discoverer, Robert Dick, did not notice the sexual dimorphism (presumably because no imprints of soft tissue had been found back then).