Small-scale fisheries (SSF) in southeast Asia contribute more food fish for human consumption than industrial fisheries and in Indonesia, employ almost 85% of the total fisheries employees. Grouper and snapper are commercially important species highly targeted, including by small-scale fishers. We estimate the spawning potential ratios (SPRs) of high-value species in a small-scale fishery in Saleh Bay (Plectropomus leopardus, Variola albimarginata and P. maculatus) and in the Timor Sea (Lutjanus gibbus, L. boutton and Epinephelus areolatus) from a larger scale fishery (Kupang) and a SSF (Rote), using length-frequency data, biological parameters and empirical equations and the length-based SPR methodology. Measuring programs collected 10,621 lengths frequency samples from six species over 12 months, with ¿ 800 recorded lengths for each species. The SPRs for all species were very low (0.02–0.12), except for E. areolatus (0.49) and ratios of fishing to natural mortalities (F/M) were high (1.8 – 9.3). The results from the length-based SPR model indicate that the fish are harvested below the size of maturity, except for E. areolatus. Further analysis indicated that the smaller E. areolatus landed in Rote is likely under-represented compared to that of E. areolatus landed in Kupang. The expanding landings of grouper and snapper on a broad-scale and low SPRs highlight the importance of seeking measures to rebuild these stocks. These estimates of SPR would be enhanced by detailed biological studies of these species to obtain local estimates of growth parameters and size at maturity, as well as the size-at-selectivity for different fishing gears.

东南亚的小型渔业（SSF）为人类食用的食用鱼比工业化渔业贡献更多，在印度尼西亚，雇用了将近85％的渔业雇员。石斑鱼和鲷鱼是高度重要的商业物种，包括小型渔民。我们估计了萨利赫湾（Plectropomus leopardus，Variola albimarginata和P. maculatus）和帝汶海（Lutjanus gibbus，L.boutton和Epinephelus areolatus）的小型渔业中高价值物种的产卵潜力比（SPR）。），使用长度-频率数据，生物学参数和经验方程式以及基于长度的SPR方法，从大型渔业（Kupang）和SSF（Rote）获得。测量程序在12个月内从六个物种收集了10,621个长度的频率样本，每个物种记录了800多个长度。除斑节肠杆菌（0.49）和捕捞与自然死亡率的比率（F / M）高（1.8 / 9.3）外，所有物种的SPR都非常低（0.02-0.12 ）。基于长度的SPR模型的结果表明，除斑节肠杆菌外，鱼类的收获均低于成熟度。进一步的分析表明，小E. areolatus死记硬背降落可能相比的代表性不足斑潜蝇落在古邦。石斑鱼和鲷鱼在大规模和低SPR上的着陆点不断扩大，凸显了寻求措施重建这些种群的重要性。可以通过对这些物种的详细生物学研究来增强对SPR的估计，以获得对生长参数和成熟时的大小以及不同渔具的选择性大小的局部估计。