Privacy policy for Citizen Science Fish Trek, respectively the website



This privacy statement informs users about the nature, scope and purpose of the collection and use of personal data by the responsible provider Institut für angewandte Ökologie GmbH (contact: see imprint) on this website or the domain, as well as on any subdomains that may arise. The legal basis for data protection can be found in the German Data Protection Regulation (DS-GVO), the German Federal Data Protection Act (BDSG) and the German Telemedia Act (TMG).


Access data / server log files

The provider or his web space provider collects data, so-called server log files, about each access to the website. This access data includes the name of the website accessed, file, date and time of access, amount of data transferred, notification of successful access, browser type and version, the user’s operating system, IP address and the requesting provider. The provider uses this log data only for statistical analysis for the purpose of operation, security and optimization of the offer. However, the provider reserves the right to check the log data retrospectively if there is a justified suspicion of unlawful use on the basis of concrete indications.


Handling of personal data

Personal data are information that can be used to identify a person, i.e. information that can be traced back to a person. Personal data is collected and used exclusively with regard to the goals of the Fish Trek project. The following groups of persons are affected by this:

    • Guests, i.e. visitors to the website: access data from these persons is stored as described above. The legal basis for data processing is Art. 6 para. 1, p. 1 lit. f (Legitimate Interest: Statistical Knowledge) DSGVO.

    • Registered markers: When a marker registers via the website, he is assigned a personal authorization code. This allows him to load his own master data about individually tagged fish into the Fish Trek database, to manage it and, if necessary, to edit it subsequently. When registering, a marker has the explicit possibility to agree or refuse the publication of his personal data, i.e. name, affiliation to a company or institution, address as well as contact data such as e-mail address and telephone. Legal bases for data processing are Art. 6 para. 1 p. 1 lit. a (consent) or lit. f (legitimate interest: research) DSGVO.

    • Finders: People who have found an individually tagged fish or tag can enter the ID code for the purpose of searching for the origin of the individual on the website, whereby only the name of the finder is stored. However, if payment of the finder’s reward is requested, the following personal data will be required: First and last name, address, BIC and IBAN of the bank account and, in case of queries, e-mail address and/or telephone number. This personal data is stored separately from the information on the reported fish and automatically deleted after two months. The legal basis for data processing is Art. 6 para. 1 p. 1 lit. a (consent) or lit. f (legitimate interest: research) DS-GVO.

Personal data of registered markers and finders may be disclosed to persons, institutions and other national and international organizations in the context of the project as well as for their evidence or funding, or for further research purposes in plain text or in a pseudo-anonymized form. The individuals, institutions and other organizations receiving the personal data may potentially be located in an EU third country. In any case, a transfer of data will only take place to the extent permitted by law and in compliance with the legal requirements, in particular from Art. 44 et seq. DS-GVO.


Advantages of participating in Fish Trek

As citizen science, all information and findings on the website are made freely available to the public. However, in accordance with scientific custom, if content is cited, it is requested that the source be acknowledged: Explicitly excluded from the right of unrestricted use are illustrations for which the relevant rights for image exploitation apply.
Each finder of an individually tagged fish or tag can claim a finder’s reward of 20 €, provided that he/she gives the required information about the fish, place and date of finding or detection, as well as his/her bank details. The handling of this personal data is explained above.
On behalf of each marker, Fish Trek will pay a reward of €20 for each return. Registered markers are also entitled to a linkage of the master data provided by him with information about individuals reported back. Registered markers can dispose of the knowledge gained from this without restriction. In addition, a registered marker will be notified immediately when a fish he or she has marked is reported to Fish Trek.



EContacting the provider of this website is possible via a contact form or directly to The following information of the user will be stored for the processing of his request: Name, email address and text of the message.


Newsletter (not yet realized)

With a newsletter we may inform you in the future in the sense of the contents of Fish Trek about technical topics and findings about the dispersal and migration of fish in European stream systems. If you would like to receive a newsletter, we need your email address as well as information that allows us to verify that you are the owner of the given email address or that the owner agrees to receive the newsletter. Further data will not be collected. This data is only used for sending the newsletter and is not passed on to third parties. With the registration for the newsletter, we store your IP address and the date of registration. This serves solely as evidence in the event that a third party misuses an e-mail address and registers to receive the newsletter without the knowledge of the authorized person. You will be able to revoke your consent to the storage of the data, the email address and their use for sending the newsletter at any time.


Integration of services and contents of third parties

It is possible that third-party content, e.g. videos from YouTube, maps from Google Maps, RSS feeds or graphics from other websites are integrated within this online offer. This requires that the providers of this content (hereinafter referred to as “third-party providers”) perceive the IP address of the user, because without this content could not be transmitted to the user’s browser. The IP address is thus necessary for the display of certain content on this website. We endeavor to use only such content whose respective providers use the IP address only for the delivery of the content. However, we have no influence if third-party providers store the IP address, e.g. for statistical purposes. If this becomes known to us, we will inform our users about it.



Cookies are small files that enable device-specific information to be stored on the user’s access device (PC, smartphone or similar). Cookies increase the user-friendliness of websites, e.g. enable users to save their login data. In addition, they serve for a possible optimization of the offer of the statistical recording of the calls and use of the website. Users can influence the use of cookies in that most browsers have an option to restrict or completely prevent the storage of cookies. However, it should be noted that the use and especially the comfort of use may be limited without cookies. Users always have the option to manage many online ad cookies through the US site or the European site


Statistics about access to this website

This offer uses the plugin “WP Statstics” to create usage statistics, for which your IP address is processed and stored anonymously. You can prevent the installation of the cookies required for this by setting your browser software accordingly. However, as a precautionary measure, we would like to point out that in this case not all functions of this website can be used to their full extent.


Storage period

Personal data is not stored for longer than is necessary for the purposes stated; this is usually 2 months. Storage may take place beyond this if this is provided for by the European or national legislator in Union regulations, laws or other regulations to which the responsible party is subject, or by scientific guidelines.


Rights of the data subject

The user has the right to receive information about his stored personal data free of charge upon request. He has the right to correct incorrect data as well as the blocking and deletion of his personal data, provided that this does not conflict with any legal obligation to retain data. In addition, there is a right of appeal to the competent supervisory authority.


Notes on communication with us

If you use the contact form of this website or other of our subdomains (see scope), we currently cannot guarantee a completely secure communication connection.


Additional services of third party providers used by us and their data protection declarations

If required, further information on the data protection of our web hosting partners follows.