The auther has studied the attachment of glochidia of A. fukudai to the fish in the Lake Uiam. This research is one of the ecological studies on the molluscs in this lake. The attachment of the glochidia to the fish body is summarized as follows: 1. The fish attached the glochidia of this mussel are 5 species including Carassius carassius, Oryzias lapites, Pseudorasbora parva, Misgurnus anguillicaudatus, Channa argus. 2. The attachment of giochidia of A. fukudai to the fish was found from December to February, while other mussels were in April. 3. The infectious rates of glochidia were 82%, 40% and 18% in M. anguillicaudatus, O. lapites and C. carassius respectively. The average rate of these 5 species was 26.9%. 4. The number of glochidia attached to each fish were 26, 13 and 8 individuals in C. argus, P. parva and M. anguillicaudatus respectively. And the average number was 4.9 individuals. 5. The attachment parts on the fish were 42.1%, 29.4% and 10.9% in pectoral fin, caudal fin and dorsal fin, and also on the base of pelvic and mouth part.