Like all wikis using the [http://www.mediawiki.org MediaWiki] software, the Akvopedia has eighteen built-in [http://www.mediawiki.org/wiki/Help:Namespace namespaces]: the main namespace, where page names have no prefix, and seventeen auxiliary types, each with its own prefix. In addition, there are two custom namespaces, with their own prefixes.
For more information on the use of namespaces in the Akvopedia see the article [[Akvopedia:Naming conventions]]