Acknowledgements
Mr. Atison Phumchoosri's role in convincing us of the fish' s taxonomic importance and assisting in obtaining them is highly appreciated. We are grateful to Dr. Apichart Termvidchakorn and Ms. Siriwan Suksri (Inland Fisheries Resources Research and Development Institute, Department of Fisheries), and Assoc. Prof. Dr. Vichian Maktoon (Srinakharinwirot University) for their most valuable suggestions and advice on taxonomical practice. We thank Dr. Bunlung Nuangsaeng (Burapha University) and Dr. Adisorn Monvises (Burapha University), Mr. Tadsanai Jeenthong (Thailand Natural History Museum) and local breeders in Samut Sakhon province, especially Mr. Suwit Suadech, for providing fish, information on collection sites and helping in collecting specimens. We thank Dr. Parames Laosinchai (Mahidol University) for his contribution to statistical analysis and also Prof. Dr. Amornrat Phongdara (Prince of Songkla University) and her colleagues for contributing to the genetic data. Horst Linke and Jens Kühne's suggestions and comments are appreciated. This study was financially supported by the Office of Higher Education Commission (National University Research Grant allocated to Mahidol University). Finally we thank two anonymous reviewers for comments that helped improve the manuscript