A frame-type midwater trawl with a mouth area of 16 m2 was developed to capture large larvae and juveniles of pelagic fish. Sampling was conducted in the waters around Izu Islands, central Japan, and off northeastern Japan in summer 1996 and 1997. Large larvae and juveniles （TL>30 mm） which avoid small mouth nets, were captured. Though several species of pelagic fish were collected, Japanese anchovy Engraulis japonicus occurred predominantly. In some tows where thousands of anchovy larvae and juveniles were collected, the abundance of larger ones （TL>30 mm） was estimated as about 70 inds./1,000 m3. Total length of the largest fish collected were 80 mm for anchovy, 37 mm for Japanese sardine Sardinops melanostictus, 82 mm for chub mackerel Scomber japonicus, and 48 mm jack mackerel Trachurus japonicus.