The alphabetic list on the left side contains the keywords after which all our bibliographic references are categorized. The keywords can get chained together to produce results in a more specific manner (The way of chaining is a logical AND, i.e. all keywords must be found in a bibliographic reference to produce its reference to be a result.

Some examples: Most references are categorized either in ichthyology or in aquaristic. If you are interested in all aquaristic articles on Channa argus, click on to the keyword aquaristic and then press down the Ctrl-button and click onto argus with the mouse, so that afterwards, the two keywords are highlighted.
If you are interested in all ichthyological articles on Channa argus, click on to the keyword ichthyological and then press down the Ctrl-button and click onto argus with the mouse, so that afterwards, the two keywords are highlighted.
If you are interested in all articles dealing with Channa argus in the its habitat in China, click on to the above mentioned two keywords and then press down the Ctrl-button for china, so that afterwards, the three keywords are highlighted.
Finally, if you submit one of the above mentioned requests, the response contains all articles matching the keywords specified by clicking.

Be aware that not all possibilities might produce a result. In cases of doubt, keep the set of selected keywords small. If you either have questions or in case you find strange things (maybe called bugs), we want to encourage the dear user to mail them with this.

The contents of the data gets updated from time to time (when this search tools is officially introduced, announcements of data update can be found in changes).