Luteinizing Hormone - Releasing Hormone analogue (des-Gly10, [D-Ala6] LH-RH Ethylamide) or LHRHa is a peptide that is similar in structure to native luteinizing hormone-releasing hormones (LHRH).

LHRHa has both biological activity and low species specificity in fish, making it appropriate for use on a variety of fish species

LHRHa is sold as a powder and typically dissolved in sterile saline and administered as an intraperitoneal (IP) or intramuscular (IM) injection