IOWA CITY — Iowa River fish swam inside the former Hancher Auditorium’s orchestra pit, during the 2008 flood. Thirty granite fish are now swimming outside the new Hancher Auditorium, in the “Wellspring” art installation unveiled Friday morning to a drumroll provided by University of Iowa Marching Band percussionist Jenna Springer.Artist Colette Hosmer joined the ceremony via video from her Santa Fe, N.M., home.The North Dakota native traveled to Iowa for the first time in early October 2019, to get a feel for Hancher and its surroundings.