Remove the skin from the carrots, quarter them lengthwise and cut into 3 cm pieces.
Clean broccoli, rinse and divide into roses. Cut the zucchini into 3 cm pieces.
Cut bell bell pepper in half, remove the core and cut the flesh into 3 cm pieces.
Blanch the vegetable bites in a saucepan of salted water until al dente, remove, cool and drain.
Rinse the fish fillets, pat dry well and cut into 2 cm cubes.
Remove the shell from the prawns and remove the intestines.
Arrange vegetables, fish pieces and prawns in separate bowls or refrigerate until ready to eat fondue.
Peel and halve the garlic clove. Remove the outer hard leaves from the lemongrass, then cut the lemongrass into 4 cm long pieces.
Boil the fish stock with the wine, flavor with garlic, lemongrass and lime leaves, then transfer to a fondue pot.
Bring the pot to the table and continue to simmer on a fondue stove with an adjustable flame.
Spoon the prepared vegetables and fish pieces onto long fondue forks or place them in fondue pots, as desired, and cook in the hot clear soup.
Serve with various sauces.
Tip: The flesh of young, small zucchini is much more tender than that of larger ones.