The good thing about frozen fish sticks is that they always come in a package with cooking instructions. And your question makes us weep….
But putting aside our snobby preference for fresh fish, realizing that frozen foods are a lifesaver for many families (used, we hope, in moderation), and recognizing that the dog might have eaten the package just as you were about to read the instructions, the general rule of thumb for fish sticks is 400°F (205°C) in a shallow pan for 16 minutes, turning them over halfway through the cooking.