Sentence:  Lopashov (1944) extirpated and grafted neural tubes from several species of teleosts—the <WSD>groundling</WSD>, "Misgurnus fossilis", the loach, "Nemacheilus barhatulus", and the perch, "Perca fluviatilis" — to determine whether pigment cells were of neural crest origin. 
Meaning of the word marked with <WSD> tags:  The (spined loach) ("Cobitis taenia"), weather loach ( (noshow=1)), or other member of the loaches.