Madtom
Madtoms are freshwater catfishes ( order Siluriformes ) of the genus "Noturus" of the family Ictaluridae . 
<triplet> Madtom <subj> Ictaluridae <obj> parent taxon <triplet> family <subj> order <obj> part of <triplet> Ictaluridae <subj> catfish <obj> parent taxon