Spawn tank - The first fishes

After two weeks and enter internal filter, I enter in tank first fishes. Two Brachydanio rerios and pair of Poecilia sphenops. Brachydanio rerios remain me from my old aquarium and Poecilia sphenops I bought again algea. A moment was chaos and stres, but then Poecilia begun eat alge for my gladness. I hope, that the first days will be without ecological catastrophe.