Missouri Aquarium Society welcomes anyone with an interest in aquatic life, from fish to plants. Our members range from beginners to published experts, and we welcome families and children. Please come to a meeting or two as our guest. We will enjoy meeting you!

Meetings are held at Jost Chemical Plant
on the third Thursday of every month, at 7:30 PM.
Families and spouses of the fishkeeper are welcome as well.

Our monthly get-togethers begin with a short business meeting then a speaker / program, followed by door prizes, a mini auction, refreshments and raffle. Past programs have included everything from presentations by internationally known speakers and authors, to educational and fun "fish fact" games.

Our Horticultural Award Programs (HAP) and Breeders Award Programs (BAP) are very active, with members bringing in fish and plants they have raised. These specimens are included in our monthly mini-auctions.

Missouri Aquarium Society (MASI) Membership
For calendar year: January, 1 - December, 31.
Those joining or renewing in November and December receive Memberships through the following year. For seamless continuity, previous year renewals are required prior to March.
All paid memberships receive the DARTER newsletter by email distribution and may participate in other programs of the club, such as BAP, HAP, Social Media, Social events, etc.

Dues are: Full/Voting*:

Individual = $20.00 - Voting Membership w DARTER for 1 Email
Family = $25.00 - Voting Membership w DARTER for 2 Emails. (Both voting parties must be named and provide emails.)

Corresponding = $15.00 - Non Voting Membership w DARTER for 1 Email**

*Full/Voting membership is recommended if attending most meetings and available for voting. Corresponding membership is recommended if not available because of distance, only desiring MASI's Social Media or for other reasons.
**Corresponding members apply for Auction Seller status with the public.


If you would like to join or renew and pay through, follow the PayPal information below:

Membership Options

For more information, email to:

Click here to download the official MASI handbook!

Next General Meeting the third Thursday of the month.

If you have any questions or need information, please e-mail