Yellowfin tuna prices in Spain, Italy, and the Seychelles range from €2,350 to €2,600 per ton, representing a significant drop from prices in June. The decline in prices is attributed to an "overreaction" from European markets based on good catches, as well as high oil and tin prices affecting the demand for premium canned food. Lack of sanitary control in Vietnam is also a contributing factor to the decline, but some sources believe it is not the main cause.