Is crayfish really farmed with birth control pills?

I often see posts like this: “crayfish are fed birth control pills, and eating too many will cause infertility”. Such rumors are hard not to believe. So what is the truth? Are the crayfish we eat really raised on birth control pills?

Actually, this claim has no scientific basis.

1. The growth cycle of crayfish is very short; they can usually be marketed in about 3 months, so there is no need to speed up their growth. If hormones were used in large amounts, it would increase the frequency of molting in crayfish, slow down their growth rate, and instead prolong the crayfish growth cycle, so farmers would not do this.

2. Crayfish are lower invertebrates, and birth control pills for higher vertebrates have no effect on them at all.

3. The sexual maturity period of crayfish is generally 8 to 10 months, which means that when crayfish are marketed, they are still far from the breeding period and have no reproductive capacity at all. Farmers using birth control pills to raise shrimp would only add cost.