Ammocrypta
Ammocrypta is a genus of freshwater ray-finned fish , commonly known as the sand darters , which is classified in the subfamily Etheostomatinae , part of the family Percidae which also includes the perches , ruffes and pikeperches . 
<triplet> Ammocrypta <subj> Percidae <obj> parent taxon <triplet> subfamily <subj> family <obj> part of <triplet> Etheostomatinae <subj> Percidae <obj> parent taxon