Do you have male Amano shrimp in the tank as well? Amano and neo car. are too different in species to mate. Neos carry the eggs until the tiny fully developed shrimp hatch while Amano shrimp hatch as larvae that have to go through a larval stage in salt water in order to morph into shrimp. I don't see any way the two species could possibly cross breed. That would be like an elephant and a kangaroo crossbreeding.
20g L174/L46/RCS/hastatus/pygmy corys, 10g OEBTs, 10g blue bees, 10g CRS, 15g L316/L46/Amano shrimp, 10g black darter tetras/CPDs,15g ADFs/clown plecos, 25g L134s/CPDs/otos, 29g Weitzmani/panda corys/zebra otos, 46g CAE/L134s/CPDs/salt and pepper corys/BNs, rubberlip pleco, 55g SAEs/L201s/L199s/BNs/kissing gourami, 75g L316s/BNs/mix of old fish folk, 30g L340s/L211/tangerine tiger shrimp, 10g micro rasboras/CPDs, 20g L134/habrosus corys/RCS