Marine small-scale fisheries are complex social and ecological systems that are currently pressurised by climate change, increasing demand for food, and expectation to sustain livelihoods. Species diversification and occupational diversification are often offered as adaptation strategies to increase the resilience of these fisheries to natural and economic shocks. However, little is known about the nature of species diversification within marine tropical fisheries. Based on 293 interviews with artisanal fishers from six coastal communities located at the isles of Zanzibar, Pemba, Mafia, and Mainland Tanga in Tanzania - we assess if fishers with the highest level of species diversification are the most financially secure and able to adapt to changes in the fishing industry. By creating an Asset Wealth Index (AWI) based on a Multiple Correspondence Approach (MCA), we investigate the relative levels of adaptive capacity and fishery connectivity within the different regional wealth quartiles. We find that less wealthy fishers target fewer species, making them less able to absorb changes in management measures focused on species, area, and closures. Likewise, fishers with higher wealth scores and higher adaptive capacity are able to better absorb the short-term losses of fisheries closures when compared to those with lower wealth and adaptive scores reliant on higher levels of fishery connectivity.

海洋小规模渔业是复杂的社会和生态系统，目前受到气候变化、不断增长的食物需求和维持生计的期望的压力。物种多样化和职业多样化通常作为适应战略提供，以提高这些渔业对自然和经济冲击的抵御能力。然而，人们对海洋热带渔业中物种多样化的性质知之甚少。基于对坦桑尼亚桑给巴尔岛、奔巴岛、黑手党和坦桑大陆坦加岛六个沿海社区的手工渔民的 293 次采访，我们评估了物种多样化程度最高的渔民是否在经济上最有保障并能够适应变化在渔业。通过创建基于多重对应法 (MCA) 的资产财富指数 (AWI)，我们调查了不同区域财富四分位数内的适应能力和渔业连通性的相对水平。我们发现，较不富裕的渔民以较少的物种为目标，这使他们无法吸收针对物种、区域和关闭的管理措施的变化。同样，与财富和适应性得分较低且依赖较高渔业连通性的渔民相比，财富得分较高和适应能力较高的渔民能够更好地吸收渔业关闭的短期损失。使他们无法吸收针对物种、区域和关闭的管理措施的变化。同样，与财富和适应性得分较低且依赖较高渔业连通性的渔民相比，财富得分较高和适应能力较高的渔民能够更好地吸收渔业关闭的短期损失。使他们无法吸收针对物种、区域和关闭的管理措施的变化。同样，与财富和适应性得分较低且依赖较高渔业连通性的渔民相比，财富得分较高和适应能力较高的渔民能够更好地吸收渔业关闭的短期损失。