Instruction to authors Acta Hydrobiologica Sinica (CN 42-1230/Q, ISSN 1000-3207), launched in 1955, is sponsored by the Institute of Hydrobiology, Chinese Academy of Sciences, and the Chinese Society for Oceanology and Limnology. Covered scope: Acta Hydrobiologica Sinica is a comprehensive academic journal dedicated to the timely publication of original research ideas and results in all fields of hydrobiology in the forms of research articles, brief reports, and reviews. A wide range of papers is published, including ecology, physiology, pathology, biogeography, aetiology, toxicology, methodology and taxonomy. The aim of the Journal is to spread up-to-date information to readers who are staff members and students of university departments of biological science and fishery, as well as scientific and technical staff of related research organizations and enterprises. The readers of the journal are spread all over the world including scientific researchers, decision-making and management personnel, and teachers and students in higher education institutions in related fields. Requirements for submissions: Submission of an article implies that the work described is requested to be original and has not been published previously and copyrighted, that it is not under consideration for publication elsewhere, and its submission has been approved by all the authors and by the institute where the work was carried out, and that, if accepted, it will not be published elsewhere in the same form, in English or in any other language without the written consent of the publisher. Before the files of an article are transmitted, authors should read the explanation with regard to the format of the Journal carefully. Upon acceptance of an article, authors will be asked to sign the Copyright Transfer Agreement. This transfer will ensure the widest possible dissemination of information. Manuscript preparing: The article should be written in good English. The title should be concise and informative. Author names and affiliations should be presented. E-mail address and complete postal address of corresponding author should be provided. The abstracts should be able to stand alone, stating briefly the purpose of the research, the principal results and major conclusions. The Introduction of the article should state the objectives of the work and provide an adequate background, avoiding a detailed literature survey or a summary of the results. The Experimental section should provide sufficient detail to allow the work to be reproduced (Methods already published should be indicated by a reference). In Results and Discussion section, results should be clear and concise; the discussion should explore the significance of the results of the work, not repeating them. A short Conclusion section should also be presented in the end. Research papers are no less than 6,000 words; Short communications are no less than 3,000 words, and, if accepted, it will not be published elsewhere in the form of Research papers, in English or in any other languages; Reviews are no less than 7,000 words. Figures and Tables should be consecutively numbered with Arabic numerals in accordance with their appearance in the text; footnotes indicating them should be placed below the table or figure body. Each figure should have a descriptive legend. Drawings should be of professional quality or generated by high-resolution computer graphics. Nomenclature and units should follow internationally accepted rules and conventions: use the international system of units (SI). If other quantities are mentioned, give their equivalent in SI. References to the literature should be cited in the text by Arabic numerals in square brackets in accordance with their appearance in the text, and listed numerically at the end of the paper. Submission: All manuscripts should be submitted through the column of “Online Submission” on the website of the journal—http://ssswxb.ihb.ac.cn. Please prepare a single file (allowed formats: Word) containing all schemes, figures, and tables integrated in the text. Then follow the instructions on the submission website. A successful electronic submission of a manuscript will be followed by a system-generated acknowledgement to the principal/corresponding author of the manuscript. After successful submission, the author can check the whole course through the column of “Online checking” on the website of the journal. Authors must rewrite the portions of the article that do not meet the requirements of the Journal and submit the revision of manuscript via the web site. After the print publication, one journal and 20 offprints of each article will be provided free of charge. Submissions are greatly welcome!