Aquacalm (Metomidate hydrochloride) is used for the sedation and anesthesia of aquarium and non-food fish species. Sedation may be desirable for transport or removal from exhibit tanks prior to cleaning. Anesthesia may be useful to enable detailed examination, spawning, or minor surgical procedures.

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


Fish sedation may be necessary in situations such as strip spawning for hatchery rearing, transporting fish, photographing fish, or removal of fish from exhibition tanks prior to cleaning.

Each gram of Syndel’s Aquacalm™ powder contains 1 gram of metomidate hydrochloride. Aquacalm™ acts on the central nervous system to induce sedation or anesthesia in fish immersed in water containing the drug.

Aquacalm™ has been tested on representative ornamental finfish species, but has not been tested on all fish species.  The effect of Aquacalm™ may vary between (and within) species, depending upon age and physical condition of fish, and under different water conditions.  Always test the dosage on a small group of fish first to make sure no unintended or adverse effects occur.

Please contact us to advise on country specific regulations and uses of this product.

Available Sizes within the USA: 1g,  5g,  10g,  50g bottles
Available Sizes within Canada: 10g , 50g 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

Aquacalm Directions for Use

Aquacalm Canadian SDS

Aquacalm Directions for Use- USA ONLY

Aquacalm USA SDS

Anesthetic’s for Fish FAQ

You may also like…