Psednos harteliPsednos harteli, also known as Hartel's dwarf snailfish, is a species of snailfish found in the north-western Atlantic Ocean.SizeThis species reaches a length of.EtymologyThe fish is named in honor of Karsten E. Hartel, a Curatorial Associate in Ichthyology, at the Museum of Comparative Zoology, at the Harvard University, who loaned specimens and read the manuscript.