LHRHa is an effective, broad species (low specificity) spawning enhancement peptide. Predictable results which provide the ability to synchronize spawns and reduce waiting times and spawn failures.

Contact us for pricing and assistance at Syndel’s USA office at (800) 283-5292, or Syndel’s Canadian Office at (800) 663-2282.  For International inquiries email sales@syndel.com.



The use of hormones to induce gamete maturation (ovulation and spermiation) and spawning in fishes is crucial to the success of many aquaculture and wild stock fisheries programs.

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.  Gamete maturation can be induced by a variety of hormones.

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

In the United States, if the intended LHRHa use is to treat food fish, or fish for release into the wild, then it must be used according to the FDA’s guidelines for more information please contact us.

Available Sizes: 1mg,  5mg,  25mg Bottles

For additional Syndel Product information such as availability, package sizes, pricing, and approvals/application details relevant to your country or region, please contact Syndel,

Resource Downloads


LHRHa INAD Protocol

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