Can you get fish high on marijuana ?

by | Oct 23, 2017 | Advanced Aquarist | 1 comment

Can you get fish high on marijuana ?

THC edibles appear to have no effect on fish.

Scientists in Lebanon fed tilapia pellets laced with cannabis oil to see if cannabinoids would have a calming effect on fish.  Their conclusion: Unlike other pets such as dogs and cats, fish feel no such high on THC.  So all you stoners with fish tanks: you can stop trying to give your fish contact highs.


It wasn’t that fish didn’t show any effects to THC; they just weren’t the desired or hypothesized effects.  Quite the opposite, actually.  Cannabis not only did not improve the fishes’ immune response, but those fed cannabis-laced foods developed slightly higher metabolisms, which consequently reduced their growth rate.

This experiment wasn’t really done to answer the late-night musings of reefers but rather to see if cannabis could relax aquacultured fish who are raised in cramped, hectic environments.  The hope was to create healthier/happier fish, which could ultimately produce better yields.  Sadly, the answer appears to be no.

The paper is published in the scientific journal, Aquaculture Research.

  • Leonard Ho

    I'm a passionate aquarist of over 30 years, a coral reef lover, and the blog editor for Advanced Aquarist. While aquarium gadgets interest me, it's really livestock (especially fish), artistry of aquariums, and "method behind the madness" processes that captivate my attention.

1 Comment

  1. Lucretia

    Has anyone tried a tincture with fish in a dish instead?


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