Nine males and ten females-talking about river crabs. After the golden autumn, male crabs are eaten in September, and crab roe is the most full. Eat female crabs in October
Generally speaking, however, April and September are the season when crabs are on the market.
(Also: sea crabs are not as good as river crabs, river crabs are not as good as river crabs, and river crabs are not as good as lake crab. )