Goldfish lice (Argulus trilineatus) are a member of the Copepod family, so are not actually lice at all but crustaceans.
Fully grown they are 3-4mm round...
Instructions and Guidelines
Storing Brine Shrimp Eggs
Brine shrimp eggs should to be stored as follows:
free from moisture; andin a cool environment at or below 50°F.
Hatching Environment
Follow...