Are these Neon Tetra babies?

Hello, recently my neon tetra got huge. After a while it just seemed like it burst and inflated down to size. Then it ended up dying and I thought it must have been a disease. But one morning about a week later, I saw about 20 of them swimming round so I put them in a breeding net. Only thing is there white? So are they my silver molly's fish which didn't look pregnant or will they grow their colours gradually. Thanks.