Dansk Akvarie Union

Dansk Akvarie Union (DAU) is the national umbrella organisation for aquarium societies and clubs in Denmark. According to its official website, its purpose is to spread and promote knowledge of the aquarium hobby, to represent the hobby's interests externally — including before public authorities — and to administer the registration of Danish first breedings of aquarium fish. The union was founded in 1945 at Danmarks Akvarium (the Danish Aquarium), with Anton F. Bruun as its first chairman. It has grown from a small group of clubs into a nationwide federation; by 1947 it counted 12 member societies, and by 1983 it had 53. Individual membership reached 1,675 in 1951. DAU serves as a coordinating body rather than a commercial retailer. It publishes Dansk Akvarie Blad, a members' magazine that appears several times a year and is posted online for members. It maintains a calendar of aquarium fairs and club events submitted by member societies, and it produces a collectible annual mug (årskrus) sold at aquarium fairs around the country — the 2026 edition features a killifish motif and was first offered at the Vejle Akvariemesse in Bredsten on 21–22 February 2026. The union also runs breeding campaigns and, since 1982, has organised the Aqua-days (Aqua-dagarna). As a federation, DAU does not manufacture or sell aquarium equipment under its own commercial brand; its 'products' are membership services, publications, events, and the registration of first breedings. It is funded through member clubs and sales of items such as the annual mug. The organisation remains active, with its website serving as the hub for news, the magazine, the event calendar, and contact details for local aquarium clubs across Denmark.

Dansk Akvarie Union (DAU) was founded in 1945 at Danmarks Akvarium (the Danish Aquarium), with Anton F. Bruun as its first chairman. Its creation reflected the growth of organised aquarium keeping in Denmark after the Second World War, when local aquarium clubs sought a national body to coordinate activities, share knowledge, and represent the hobby to authorities. The union expanded steadily in its early decades. By 1947 it comprised 12 member societies, and by 1951 the combined individual membership had reached 1,675 people. Growth continued through the post-war period, and by 1983 the union counted 53 member societies. This expansion mirrored the broader popularity of home aquariums in Denmark and the Nordic countries. In 1982 DAU launched the first Aqua-days (Aqua-dagarna), an event format that brought aquarists together for exhibitions, lectures, and exchange. In 1994 the union started a breeding campaign (odlingskampanjen) to encourage members to breed aquarium fish and to document their successes. A central function of DAU has been the registration of Danish first breedings of aquarium fish — a service that records which species have been successfully bred in Denmark for the first time by Danish aquarists. In 1995 the union celebrated its 50th anniversary. In the 2020s DAU continues to publish Dansk Akvarie Blad several times a year, maintains an online calendar of aquarium fairs and club events, and produces a collectible annual mug sold at fairs around the country. The 2026 mug features a killifish motif and was first offered at the Vejle Akvariemesse in Bredsten on 21–22 February 2026. The union remains the umbrella organisation for Danish aquarium clubs, with its website providing news, the magazine, the event calendar, and contact details for local societies.

• 2026

  Dansk Akvarie Blad 3/2026 posted online; 2026 annual mug (killifish motif) first sold at Vejle Akvariemesse, 21–22 February 2026.

• 1995

  DAU celebrates its 50th anniversary.

• 1994

  DAU launches a breeding campaign.

• 1983

  The union counts 53 member societies.

• 1982

  DAU starts the first Aqua-days.

• 1951

  Combined individual membership reaches 1,675 people.

• 1947

  The union comprises 12 member societies.

• 1945

  Dansk Akvarie Union founded at Danmarks Akvarium; Anton F. Bruun becomes first chairman.

Non-profit national federation for the Danish aquarium hobby; membership and advocacy organisation rather than a commercial brand.

• Dansk Akvarie Blad

  Members' magazine published several times a year and posted online.

• Annual mug (årskrus)

  Collectible annual mug sold at aquarium fairs; 2026 edition features a killifish motif.

• First-breeding registration

  Administration of the registration of Danish first breedings of aquarium fish.

1. 1Forsidedanskakvarieunion.dk
2. 2Dansk akvarie unionwikidata.org
3. 3Dansk Akvarie Unionsv.wikipedia.org