If frozen, thaw out 4 Flounder Fillets in cold water for about 5 minutes.
Cut lemon in half and squeeze juice over all fillets.
Sprinkle with salt and pepper and add paprika to taste.
Place fillets in steamer evenly trying not to overlap pieces. If you have a 3 tier steamer, place 2 fillets on the top tier and 2 fillets in the middle tier. If you are using a 2 tier steamer and using the bottom tier, be aware that cooking times may vary.