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About MAS

The Minnesota Aquarium Society (MAS) is an aquarium club that promotes all aspects of the aquarium hobby, including aquarium fish, plants and invertebrates. The club was founded in 1931 and incorporated as a non-profit organization in the State of Minnesota in 1956. The mission of MAS is to Help Aquarists Be More Successful.

At the time of this writing (May, 2025), MAS has over 300 members. Since the Covid pandemic, most club activities have been moved on-line. Where possible, some activities will move back to in-person events. MAS activities are organized and executed under the direction of its Board of Directors. The Board conducts its activities in accordance with MAS By-Laws. Board meetings are held monthly, usually on the third Thursday of every month. Meetings are open to all current members. If you are interested in attending a Board meeting, please send an email to president@aquarium.mn to confirm the time and receive a ZOOM log-in. MAS By-Laws and Minutes from the latest Board of Director meeting are posted here.

MAS Programs

Membership Programs: Monthly membership meetings are typically scheduled for the first Thursday of every month (except July). After a short introduction of upcoming club activities, each meeting features a topic-driven presentation featuring a nationally recognized expert in a relevant field. Visit the home page to find a link to pre-register for the ZOOM meeting. (Only pre-registrants will receive the personalized link to log-in at the meeting.) Following the presentation, attendees may choose to stay with the presenter for Q&A or move to a themed breakout room for moderated discussions.

Auctions: MAS conducts virtual auctions 5 times a year where members can list items for purchase and bid on listed items. Sellers are limited to a maximum of 25 items for sale with no more than 4 bags of any one species/biotype. Items which do not receive a minimum $5 bid will be removed from the auction.

For more detailed information, click on MAS Auction.

Breeder/Horticulturalist Awards Programs (BAP/HAP): MAS conducts BAP and HAP programs to encourage breeding/propagation of aquarium fish, invertebrate and plant species. Members who have successfully multiplied these species are encouraged to pass them onto other members in return for BAP/HAP points, leading to recognition and commemorative awards. Both BAP and HAP participants can submit their entries at regularly scheduled auctions. Additional events may be scheduled by each group. The two programs are run independently. BAP regulations can be seen here.

Plant Extravaganza: MAS annually organizes a Plant Extravaganza event (typically in November) to introduce aquarists to a diversity of aquarium plants which can enhance their hobby activities. Members will be able to purchase plants (in person) at significant discounts and receive information on how to raise and successfully propagate them. Information on Plant Extravaganza activities are posted 30 days prior.

Summer Picnic: MAS members are invited to join fellow aquarists at an annual picnic, usually held in August at the Highland Park Shelter in St. Paul. The club provides brats, burgers, hot dogs, etc. Members are encouraged to bring non-alcoholic liquid refreshments.

Annual Show: In years past, MAS has organized an annual fish exposition in Hagfors Hall at Augsburg University in March. The 1-day exposition, which is open to the public, includes fish competitions, invited speakers, aquarium displays and a large vendor room with vendors of aquarium accoutrements. Raffles and auctions of donated items are conducted multiple times during the day. The 2025 exposition was a success! Anyone interested in helping MAS put together another show is encouraged to contact us via showchair@aquarium.mn.