“…At any time period (e.g., one year) in an open-access fishery, some vessels are Note: Due to unavailable data, the 2004, 2005 and 2008 average catches are calculated by taking gross revenue divided by regional average prices of fish in each year, respectively. We use information of gross revenue from published independent research papers for the Khanh Hoa's offshore fisheries ( a Kim Anh et al [20], b Duy et al [21], c Long et al [22], d Nga [23]). Price data are collected from traders who buy fish directly from fishers, with the same (common) prices among vessels for each year.…”