I would add more fine-leafed plants, like hornwort, anacharis, cambomba carolinia, or even water wisteria, depending on how many watts of light per gallon you have. However, it might be a bit tricky to feed them after they outgrow eating the microscopic organisms on the plants. You could move the fry to a breeder's box or breeder's net, which is a floating container that would go inside your current tank. My only worry with this is that you might stress them out quite a bit. You could try crushing up fish food and placing the food in a syringe, then squeezing the syringe into the plants to see if the babies will eat it without the other fish acting nosy. The babies will also eat Hikari fry pellets. Also, the fry need to be fed 5-7 times a day. Just be careful you don't feed too much each time. Having that much fish food in your tank would cause problems. I hope this helps! Best of luck!