Congratulations on your prolific pygmy ponies, sir!
Copepods are the ideal foods for your dwarf seahorses (Hippocampus zosterae) but it is very challenging to be able to provide them with copious numbers of live copepods on a daily basis, so most home hobbyists rely on newly hatched brine shrimp (Artemia nauplii) as the staple diet for their dwarf seahorses.
Of course, if you have been able to convert some of the dwarfs to eating frozen foods instead, that will make feeding them much easier and allow you to greatly diversify their diet. In my experience, is very difficult to get dwarf seahorses to consistently accept frozen foods as their staple diet, especially since captive-bred-and-raised Hippocampus zosterae are very rarely available.
The newborns will require live foods, and larval copepods and newly hatched brine shrimp will suffice for their needs as long as you can provide them in good quantities throughout the daylight hours.
Contact me off list about your dwarf seahorses and I have a great deal of useful information about them that I can provide to you as attachments when I reply to your e-mail, Kris. (This includes a very detailed species summary, useful articles on your seahorses, hobbyist suggestions, and helpful tips from other dwarf seahorse keepers.)
You can reach me at the following e-mail address any time:
Best wishes with all your fishes, Kris!
Pete Giwojna, Ocean Rider Tech Support