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Colorado Aquarium Society

Upcoming Events

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

Please note the new meeting location.


May Meeting is Friday 5/3 @ 7 PM

- Meeting Presentation -

Mike Wise will give a presentation on Apistogrammas. Mike has been studying South American dwarf cichlids, with an emphasis on the genus Apistogramma, for over 35 years, and is well-known in the hobby for the breadth of his vast knowledge.


Where: Hope United Methodist Church, Friendship 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, Sera USA, 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)

May Categories:


  1. Sharks and Loaches. Sharks from the Cyprinid Family including the Red-Tailed, Rainbow, Variegated or Calico, Bala or Tricolor, Apollo, Arrow, Flying Fox and Black Shark genera Labeo, Labeobarbus, Epalzeorhynchos, Balantiocheilus and Morulius (excludes Dennison’s barb sometimes called Dennison’s shark and all catfish such as iridescent shark) loaches from the Botiidae, Cobitidae, Balitoridae and Nemacheiliidae families including the Kuhli, Weather, Clown, Royal Clown and Hillstream loaches. Sharks shown as singles. For loach species where sex is readily determined (Acanthopthalus spp.) shown in pairs otherwise two fish. Fish over six inches may be shown as singles.

  2. Livebearers of the Poecillidae family. Mollies, Swords, Platys, Guppies & all other fish of the Poecillidae family. Excludes Anableps, Chondrichthyes etc. which may be called livebearers but are not in the Poecillidae family. Shown in pairs.

  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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