Floodplain river ecosystems serve for the survival of fish as a habitat for fish, which are complex with rivers, creeks and lakes flood or oxbow lake. One of the fish that lives in floodplain river is Sengarat Fish (Belodontichthys dinema, Bleeker 1851). The aims of this study were to isolate DNA and amplify DNA of Sengarat Fish (B. dinema) based on Mitochondrial Gene ND4 from floodplain river …