Feeding and breeding question

[Sponge bob]

3 dwarf puffers
tank perms. are all fine.
ph is around high 6 low 7
Its not much of a hospital question I have,I feed one a day for 1.5 week then stop 2-3 days, I feed my dwarfs snails,blood worms, brine shrimp and they eat water bugs that fall into the tank. one(female is very fat) the other male is getting fat.the new one is also getting fat. I try to feed them the same amount. Is the feeding menu ok? Or should I get frozen shrimp and let them nibble on it along with mussels?
also
I have 1 female, 2 males, a big plant and drift wood with lots of hiding spots...would there be a issue?I don't wanna return a puffer.

[Sponge bob]

Anyone?

[Myaj]

How big is the tank? If its too crowded the two males may eventually fight, but you never really do know how they are going to get along long term.

For feeding, I usually skip one day a week, so that sounds about right, considering they are still gaining weight.

[Sponge bob]

How big is the tank? If its too crowded the two males may eventually fight, but you never really do know how they are going to get along long term.

For feeding, I usually skip one day a week, so that sounds about right, considering they are still gaining weight.

its a 12 gallon.My female was huge now is skinny but not like IP.She stays fat when she eats and she might of layed eggs.possible?She stays in the plants and then comes out during feeding.the males swim around the plant