Renata Solimini (Rome, Italy) and Moan Lisa (North Liberty, Iowa, United States) met through the mail art network in 2014.
In October 2015, Renata and Moan began a duo collaboration with “fish” as a theme was born, initially inspired by a solo show of Renata’s in Rome held in September 2015.
Here you can find details of the process of making collaborative artworks within Feed the Fish project: 
At present, their duo works (made with four hands) consist of three different kinds of artworks: analog art (collaborative paintings on canvas using oil, acrylic, collage and markers); digital art with handmade interventions (digital collage by Moan Lisa printed on canvas with subsequent painted or drawn interventions by Renata: watch the video about this process); digital art using pictures of paintings made by Renata then digitally modified by Moan Lisa and then printed on canvas. The two artists has worked also on asemic writing and collaborative poetry. 
Their collaborative artworks were shown in USA, in Des Moines and Iowa City (Iowa), Grand Rapids (Michigan), Lincoln (Nebraska); and in Italy, in Rome and Bomarzo (Viterbo province) between 2016 and 2017.