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Colorado Aquarium Society

Upcoming Events


We are pleased to have found a new home
for our monthly meetings.

Please note the new meeting location.


April Meeting is Friday 4/5 @ 7 PM

- Meeting Presentation -

Ken Burkert will give a presentation on container water garden.`

With the arrival of warming season this is the time to consider keeping your aquarium fish outside for the summer.  Bring your questions.  There are CAS members keep their (not all) fish outdoors in the summer..


Where: Hope United Methodist Church, Fellowship Hall

             5101 S. Dayton St, Greenwood Village, CO 80111

- Thanks to Our Supporters -

Big thanks to MC Aquatics, Neptune's Tropical, Fish Den, Aqua Rocks Colorado, Biggs Lagoon, in donating to the club this past year in support of raffle prizes and items in our fund raising auctions.  Please visit your local fish stores for your fishy needs... especially those who support the club.

- Mini Auction -

    As usual, the second half of the meeting will feature a mini-auction.

    Sellers are limited to 5 items of anything related to the hobby.

    Sellers will split auction proceeds 50-50 with the Club. Club members

    enjoy an 80-20 split.

Register your lots in advance here.

- New Membership Year -

Join and support Colorado Aquarium Society as a paid member

here or in person at the meeting.

     Benefits include:

•  option to participate in the bowl show

•  improved seller splits on auction sales

See the CAS Handbook for additional member benefits.

     You may join CAS as a paid member up until the start of auction

     and be eligible for the 80-20 member split.

Don't forget to:

1.  enter your auction items here

        2.  enter the bowl show!

- Bowl Show -

(CAS members only)

March Categories:


  1. African rift lake cichlids.  Those cichlids that are endemic to the African rift lakes (Malawi, Tanganyika, Victoria, etc.) Examples: Cobalt and Red Zebra, Blue Dolphin, Frontosa, Electric Blue, Electric Yellow, Mbuna, Pseudotropheus, Tropheus, Labeotropheus, Metriaclima, Nimbochromis, Neolamprologus, Lamprologus, Julidochromis, Tropheus, Cynotilapia, Cyphotilapia, Eretmodus, Cyrtocara, Sciaenochromis, etc.
    Shown in pairs with a divider, if needed.
    Fish over eight inches long may be shown as singles.

  2. All other non-fish aquarium animals.  Amphibians (frogs, newts, salamanders), Lizards, Turtles, Snails, Corals, Anemones, Echinoderms, and any other form of aquatic or semi-aquatic life that is not a fish.  This includes freshwater and marine invertebrates except freshwater shrimp.
    Shown as singles.

  3. Open class​

Bowl Show participants, please arrive early to setup your tanks/bowls and fill out necessary paperwork for your entry.



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. Our monthly meetings are open to the public and everyone is welcome!


Visit US

Visit us in person, usually 1st Friday of the Month, 7PM

Hope United Methodist Church
5101 South Dayton Street
Greenwood Village, CO 80111

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We'll be in touch soon. Thanks!

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