Dream symbology is often as individual as people. Ask yourself, what do these things mean to me. They seem to have distressed you so something is clearly bothering you about this. You could consult a dream dictionary, but that isn't going to help much and you give no context for the animals you saw. Was the cat eating the fish? Vice versa? What do white cats mean to you, did you have one for a beloved pet or were you attacked by one? Where you made sick once by the smell of burning fried fish or does it remind you of your families camping trip where you had so much fun laughing when dad destroyed dinner and you all joked about it all night?
Answer those questions and you'll know your answer.