Marlins Minor League pitcher Ronny Fermin has been suspended 50 games for violating the Minor League Drug Prevention and Treatment Program.

Fermin, 19, signed a Minor League contract with the Marlins in November. The Dominican right-hander received the suspension after testing positive for metabolites of Stanozolol, a performance-enhancing substance.

The suspension will be effective immediately upon the start of the Gulf Coast League season, where Fermin is currently listed as a member of the Marlins' Rookie-level club.