sentences:  However, in the case of "I. greeleyi", it is reasonable to assume metamorphosing animals do not feed but maintain body size by water uptake.This derives from measurements of oxygen consumption for ammocoetes of "I. greeleyi" (= "I. hubbsi") by Hill and Potter (1970).Based on their measurements (9.5”C) and on energy concentration determined for "I. gagei", the energy requirements for metamorphosis might be achieved without loss of body weight by increasing relative water content from 75 to 79-81%.