Cleaner & Spider Shrimp, which is M/F

[roger]

Hello to all, can anyone tell me how do u tell which shrimp is a male and which is a female? Any unique markings or lines?

[skipm]

I'm not familiar with spider shrimp but the Scarlet Cleaner Shrimp are hermaphradidic meaning that they are both male and female. It is possible for them to fertilize another shrimp right after moulting even while they are carrying eggs themselves. Skip