This article addresses ethical and methodological challenges I encountered while conducting fieldwork in the town of Camiri, between May 2023 and December 2024, as part of a research project on gender diversity in the Bolivian Chaco. Through the analysis of interviews with non-heterosexual people and my field notes, emerged the concept of mandate of invisibility, which refers to what is allow or not to be seen, in relation to gender expression and sexual identity. I reflect on how this mandate affects my work as a researcher and the impact my presence has in relation to the tensions between visibility and invisibility.