(I hope you don't mind, I fixed the code so it shows the images)
Hi Mary! Welcome to fusedjaw.com! Laura is spot on the money, those are not dwarf seahorses, those are Hippocampus comes, the Tiger Tail Seahorse. Ugh, I know they are arriving smaller and smaller into the country but I can't believe anyone sold them as dwarf seahorses. You're going to have to disregard everything you read about dwarf seahorses.
They look rather small for a year old, but their body condition is good, so that's good news. What are you feeding them now?
If you don't mind me asking, where did you get them from? I'd like to make sure that other people know this could happen, because dwarf seahorses and large seahorses have different requirements.