Shallow water reef fishes of Guerrero and Oaxaca (Mexico) were studied through visual censuses as part of exhaustive biological inventories conducted from 2004 to 2019. The systematic checklist comprises 183 species from 55 families. The most representative families were Serranidae (14 species), Carangidae (13), Muraenidae, and Labridae (11 each). The highest representativeness at the zone level was obtained at Ixtapa-Zihuatanejo (158 species), Huatulco (141), Acapulco (121), Puerto Ángel (62), and Puerto Escondido (39). Sample-based rarefactions showed that the biological inventory at the regional level has a representativeness of 90.51%. The PERMANOVA results showed that the fish assemblage differs among zones, while the SIMPER analysis showed that the variability is a product of the species dissimilarity among zones, mainly among the cryptobenthic, highly mobile, and seasonal species. The average taxonomic distinctiveness (Δ⁺) shows that Ixtapa-Zihuatanejo has greater taxonomic diversity, followed by Acapulco and Huatulco with intermediate Δ⁺ values, while Puerto Escondido and Puerto Ángel have the lowest Δ⁺. Overall beta diversity (β_SOR) was mostly due to nestedness (β_SNE = 0.167) rather than spatial turnover (β_SIM = 0.365), while pairwise turnover species (β_sim) was high between Ixtapa-Zihuatanejo vs. Puerto Escondido and Huatulco vs. Puerto Angel. This study outlines new knowledge regarding how the mosaic of rocky and reef associated fish is shaped along the reefs and rocky-reef patches in the south of Mexico.

通过视觉普查研究了格雷罗州和瓦哈卡州（墨西哥）的浅水礁鱼，作为2004年至2019年进行的详尽生物清单的一部分。系统清单包括55个科的183种。最具代表性的科是Serranidae（14种），Carangidae（13），Muraenidae和Labridae（各11个）。在Ixtapa-Zihuatanejo（158种），Huatulco（141），Acapulco（121），PuertoÁngel（62）和Puerto Escondido（39）获得了区域一级的最高代表性。基于样本的稀疏活动表明，区域一级的生物清单具有代表性，为90.51％。PERMANOVA结果表明，不同区域的鱼类组成不同，而SIMPER分析表明，变异性是区域之间物种差异的产物，主要在隐栖，高活动性和季节性物种中。平均分类学区别度（Δ⁺）表明Ixtapa-Zihuatanejo具有更大的分类学多样性，其次是Acapulco和Huatulco，其Δ ⁺值中等，而Puerto Escondido和Puerto Angel的Δ ⁺最低。总体beta多样性（β _SOR）主要是由于嵌套性（β _SNE  = 0.167），而不是空间的营业额（β _SIM  = 0.365），而两两成交品种（β _SIM）伊斯塔帕-芝华塔尼欧与波多埃斯康迪和瓦杜尔科VS之间为高天使港 这项研究概述了有关如何在墨西哥南部的礁石和礁石斑块上塑造与礁石和礁石相关的鱼的镶嵌的新知识。