Tc1-like transposons are widely distributed within the genome of animal species. We identified a novel Tc1-like transposable element (CCTN) in the genome of common carp,. CCTN is 1 611 bp in length, containing an inverted terminal repeat (214 bp) and a Tc1-like transposase gene (996 bp). The deduced amino acid sequence of CCTN transposase contains a DD(34)E motif, which is essential for the catalytic function of Tc1-like transposase. We used real-time quantitative PCR to measure the copy number of the CCTN transposons in the copies. Phylogenetic analysis suggested that CCTN transposons belong in the same Tc1 family as Pleuronectes platessa. Our results provide further insight into the genome of