What Are Some of the Penalties for Fishing Without a License?

Penalties for fishing without a license varies from state to state; in Massachusetts penalties include fines between $50 and $100, up to 30 days incarceration or both, as of 2015. State law also assesses a $5 penalty per fish and $2,000 for an endangered species, states the Commonwealth of Massachusetts. Iowa's court system imposes penalties to which the violator must reimburse the state $15 for each fish and $1,000 for endangered species, according to the Iowa Department of Natural Resources.