That would have been my second guess but it doesn't look round enough in the photos. Although the colouration and patterning does look more like it. I'm sure Brennos will let us know
I'm assuming you mean Betta fry?
If so, I feed egg yolk paste twice a day (along with the algae ball in their tank) until they're old enough to take ground up flakes. Others do it differently though.
HTH
Mice for dinners.
Got 3 x 6500k 23w energy saver CFL's lined up, just need to mount the "bracket" to the wall.
Cat jumped out of the tank Carpet cat(fish) :lol: