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 5 weeks 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).