We all need to think about "generalizations" we make in regards to our hobby. There are always "if and or but's" to concider. If there weren't, we wouldn't have "pioneers" in the industry who push limits and help us better understand and care for our charges....
I was told (by a so called "expert") that my seahorse juvi's (H. Reidi at about 4-6 months old) wouldn't eat amphipods...."too big" he said. Uh huh...some of the pod-zillas in my
fuge are big..but they do reproduce. I siphon the small ones and feed them to the ponies ALL the time. they love them... go crazy hunting for them on the bare bottom grow out tank. Even funnier to watch them try to attack the mirror images of the bugs on the glass
For what it's worth, my mandarin, Hendrix also eats amphipods, OF ALL SIZES. I've seen him push empty shells around and snick them right up. He's even eaten flatworms (I have a picture if you'd like to see it). Finally, EVERY DAY, he eats frozen brine shrimp (adult), cyclopeeze, and HUGE frozen PEI MYSID shrimp. We all know that PEI packs LARGE mysid. He snicks em down like pasta!!
My buddy's spotted green mandarin also eats PEI Mysid and it is half the size of Hendrix.
Dave