Although I do look at the first few ingredients, you can't always rely on them... just because they list the nice, fresh sounding ingredients first doesn't mean that they are what compose the majority of the food.
You could have 90% filler and 10% herring and list the herring first so people would think it is high quality. Kind of a marketing ploy I think...
To be honest, I have never had a fish die or show signs of malnutrition, so I can't actually say what a good or bad food is... I mean if your fish eats it and is generally healthy, how can you determine the quality of different foods?
I guess I buy according to brand, what I hear, and ingredient listing, as biased as all these methods are. I fall for the nice packaging and so-called specialty stuff I guess
I think wardley sucks too, but my fish still ate it, I guess I just thought it was cheap stuff. Anyone have evidence of why certain foods actually suck - have fish actually died/looked rough on certain diets? Or is it just because they list fish meal and starches.
I feed my fish lots of fresh foods and a variety of dry foods, so even if I was feeding one poor quality food, it wouldn't make a difference, because they'd get 10 other things in between.