Supplementary Table.docx

To explore lipid metabolism, we identified key genes involved in the biosynthesis of long-chain polyunsaturated fatty acids (LC-PUFAs), namely the orthologues of the fatty acyl desaturase fads2 and the elongases elovl2 and elovl5. Comparative evolutionary and structural analyses revealed that B. amazonicus shares conserved features with other Amazonian fish, reinforcing its capacity for LC-PUFA biosynthesis.