Yes, Swedish Fish are halal to consume according to Islamic dietary laws.

Swedish Fish do not contain any haram ingredients such as gelatin or alcohol. The main ingredients are sugar, invert sugar, corn syrup, modified corn starch, citric acid, white mineral oil, natural and artificial flavors, Red 40, and carnauba wax. In the USA, Swedish Fish have been certified halal by The Islamic Food and Nutrition Council of America.

And Allah knows best.

Sources:

• Halal Rule
• Halal Haram World
• Snack Works
• Halal Guidelines