I wouldn't go for trout feed...trout feed is made to get fish the largest possible in the smallest amount of time. It would be akin to an alien race trying to breed humans for use as food, and feeding us only McDonald's. The diet would turn us fat in no time....or perhaps a better example would be if they fed us only hormoned meats to increase our girth and growth. Do a Google on fatty liver disease to see what a ton of fat and protein will do to a fish.
I tend to stay away from Hikari, after noticing the -MINIMUM- 49% protein in their marine pellets. I now feed only New Life Spectrum foods, which can also be found at Ken'sFish, and this is the -only- pellet and food I feed at the zoo, save for our large dragon moray eel, our shark, and moray eel, if only because they would all require a few dozen pellets at any given feeding, and it is just not possible to feed a three foot long shark a pellet a few centimers across. Everyone else though, from the mudskippers to the lionfish to the blue angel to piranhas, even our electric eel gobbles down the wafers and NLS pellets, and no one has looked better ever. No hormones in NLS, but there -is- garlic, and we've yet to have a case of ich break out. And no, I don't sell NLS, I don't make any profit from this (as a matter of fact, my last food bill for the zoo ranged in the triple digits, so if anything I'm spending money more!). Plus, Pablo offers you a money-back guarantee if the food doesn't make your fish look better.