GHOSH, S.K. and KHAN, A. 2026. The olfactory organ of long whiskered catfish, <i>Mystus gulio</i> (Hamilton, 1822): histomorphology and ultrastructure. Iranian Journal of Ichthyology. 12, 4 (Jun. 2026), 312–324. DOI:https://doi.org/10.22034/iji.v12i4.1126.