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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.

COVID-19 Corona Virus cautions and closings are preventing us from meeting.  When this changes we will post it here, on Facebook, and by email.  So, our Meetings are canceled till further notice.

Monthly Meeting: CANCELLED  Bethany Lutheran Church, 4500 E. Hampden Ave. Cherry Hills Village, CO 80113.

(Front room as usual)


Speaker:  TBA


Bowl Show:  TBA

Mini-Auction:  (See Auctions tab for more details). 

Coming Events, Mark your calendars:​
JUNE 5TH - Regular Meeting:  Cancelled

Speaker : TBA

See list of Bowl Show categories here

JUNE 20TH - Field Trip to Colorado Gator Farm - see below

JULY 3RD - Regular Meeting:  ???

Speaker : TBA

See list of Bowl Show categories here

AUGUST 7TH - Regular Meeting:  ???

Speaker : TBA

See list of Bowl Show categories here

Please Join Colorado Aquarium Society as we visit

Colorado Gators Reptile Park in Mosca, CO Saturday, June 20th


We will meet there at opening time. Some of us will be going early and staying the night. Carpooling is suggested and up to the member to arrange. Campers and RV's can stay on sight for free. To sign up Just email info@coloradoaquarium.org with name of each person attending, their age and contact info. CAS will cover the cost for admittance.  (If you just show up, you will have to cover admittance cost)  


Every visitor to Colorado Gators has the opportunity to meet, pet, hold, and take pictures with a little alligator!  For $2.00 visitors can buy a bucket of “Gator Chow” to feed the alligators, and occasionally there will be dead fish available to feed to the alligators as well!  They have several large African Sulcata tortoises that wander freely throughout their own sections of the tour.  Feel free to pet these tortoises, but watch your step, there are several low “tortoise fences” to keep each tortoise in his or her section.  Two of their most popular exhibits are the albino alligators, including Mr. Bo Mangles and Morris the Hollywood alligator from “Happy Gilmore”.  Some of the other reptiles you can see at Colorado Gators Reptile Park are:  fearsome Nile crocodiles, Burmese pythons, a 17′ reticulated python, anacondas, red tail boas, 3 species of rattlesnakes, monitor lizards, tegus, geckos, iguanas, box turtles, snapping turtles, and caiman.

The tour also includes our working fish farm.  See where our fish are grown out for stocking ponds and aquaponic systems, and for human consumption.

Fishing is FREE with paid admission!  You must have your own equipment.  Tilapia and Catfish are catch and release or $3.00/lb to keep.  If you catch Carp they would like you to feed them to the alligators!

It is unlikely we will have a meeting anytime soon, so this is an opportunity to socialize with other aquarium enthusiasts. As it stands now, we will not be having another big auction this year. It is our hope to be allowed limited meetings at some point in the near future with mini-auctions, and we will keep you informed.

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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