The Colorado Aquarium Society, established in 1947, is an open group for aquarists to share their interest in all facets of the aquarium hobby. Our members consist of advanced expert hobbyists as well as beginners and all levels between. If you are interested in learning about the hobby, sharing your experience in the hobby, or would like to discuss any aspect of fish, invertebrates, plants, aquariums, ponds, and amphibians, The Colorado Aquarium Society General Meetings take place the first Friday of each month except July and December when we have parties instead.  Our meetings are open to the public and everyone is welcome!  We have a public auction twice a year in the Spring and Fall, mini-auctions at each meeting, and special events though out the year. Please see below for current dates. Each meeting has a Bowl Show where members show their fish and/or invertebrates for prizes and ribbons. Other programs we have are Grow Competitions (both fish and plants), Aquarist of the Year, and more. Members who place in these competitions are awarded points that are accumulated towards a number of different awards.  For details on these programs and all our activities, rules, and guidelines use the menu above.

Monthly Meeting:

Friday, Dec. 6th, 2019 @ 7:00pm in Bethany Lutheran Church, 4500 E. Hampden Ave.

Annual Holiday Party!  Great Food and Great Fun!  Enjoy the White Shark gift exchange, bring a gift in a brown paper bag (no gift wrapping) in the $5-$20 price range, to share with fellow members.  Each person has a chance to choose a gift off the table or take one from someone who has already chosen theirs.  Full rules will be explained in person.  It is loads of fun and we do this all the while enjoying catered food from Olive Garden and Cracker Barrell.  No cost to attend for members.  Membership is easy, just fill out the form on the program page of this website. 


We will also be doing a cookie exchange: Bring 3 dozen home baked Cookies, 2 dozen will be shared with other participating bakers to take home and 1 dozen will be for eating at the party.  

There will be no Speaker or Mini-Auction!  Though we do celebrate our Bowl Show Champions.

Our Bowl Show for December is by invitation only!  

2019 Past winners are encouraged to bring in their winners to compete for the December Championship and Showperson of the year.  Other awards will be given out as well, Aquarist of the Year and Junior Aquarist of the Year.   

Coming Events, Mark your calendars:​

DECEMBER 6TH - Christmas Party

No Speaker, or Auction

White Shark gift exchange and Tons of good food!

Bowl Show: Championship class. All first place winners from

all classes held during the year are eligible.

JANUARY 3RD - Regular Meeting:

Speaker : TBA

See list of Bowl Show categories here

FEBRUARY 7TH - Regular Meeting:

Speaker : TBA

See list of Bowl Show categories here

MARCH 6TH - Regular Meeting:

Speaker : Gary Lange - Rainbowfish Guru 

See list of Bowl Show categories here

Congratulations to Athena Sundsted for winning our Logo Contest!  The logos you see here are now on T-shirts and merch.  When the T-shirt or Hoodie is worn into a participating LFS (local fish store) between now and the end of 2020 the wearer gets a 5-10% discount (at the discretion of the retailer).  A list of participating stores is on the sponsors page.  

To buy your CAS gear click here

Meetings take place at Bethany Lutheran Church 4500 E. Hampden Ave. Cherry Hills Village, CO 80113.   

Membership is free, so your support is greatly appreciated. 

Find us on Instagram - @colorado.aquarium.society

Colorado Aquarium Related Clubs

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