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為瞭解夏季東海陸棚南部海域仔稚魚的種類組成與空間分布，於2011年6月20－24日，在東海東南部海域設置的9個測站 (圖1)，用海富號試驗船以1.6 m ORI浮游動物採集網自離海底5 m處向上斜拖至海表面來採集仔稚魚。研究期間共計採獲36科56類220尾仔稚魚 (如表)，其中以發光鯛屬 (Synagrops sp., 佔總捕獲尾數的18.2%) 的40尾最多，其次依序是鱷齒魚科 (Champsodontidae, 17.3%)、海鰗鰍科 (Bregmacerotidae, 5.5%)、圓花鰹 (Auxis rochei, 4.5%)、石首魚科 (Sciaenidae, 4.1%) 和鼠銜魚科 (Callionymidae, 3.2%) 等，其餘50種則合佔47.2%，顯示本海域在夏季時的仔稚魚種類組成中，除了少數種類 (如圓花鰹) 為表層性之外，係以沙泥底棲性小型魚類為主。在仔稚魚豐度的空間分布特性方面，來自黑潮流域的表層性魚類主要分佈於近沖繩海槽處，而沙泥底棲性魚類則分布於陸棚上。仔稚魚群聚構造的空間差異非常明顯但非常均衡，而優勢種的存在與否影響了夏季東海東南部海域仔稚魚的群聚構造。

To clarify the spatial distributions of larval fish assemblages in the southeastern East China Sea, larval fishes were collected from 9 stations by R/V Hai-Fu with ORI nets with vertical towing during June 20-24 2011. A total of 220 individual of fish larvae belonging to 36 families and 56 taxa were collected. The dominant species were Synagrops sp., comprised 18.2% of total catch, and followed by Champsodontidae (17.3%)、Bregmacerotidae (5.5%)、Auxis rochei (4.5%)、Sciaenidae (4.1%) and Callionymidae (3.2%). The remaining 50 species occupied 47.2% in total. It indicated that the assemblage of larval fishes was dominant by non-economic sand-mud species. In addition, the sand-mud species were distributed at the continent but the pelagic species were distributed at the margin region of East China Sea. The assemblage structure was more complicated and the dominant species played a major role.