The carapacians have genitals and how they reproduce and what they eat and drink?
Carapcians are clones of the chess pieces shown here. They have no genitals as confirmed by Roxy. They eat human food as shown many times by WV.
More specifically: Pawn carapacians have herbavor-like teeth and loves vegetables and anything green and prisoners on Prospit are given pumpkins, but other carapacians like Jack have sharp teeth, prefer meat and hate fresh produce. Heart Boxcar did eat eggs that one time too