Hello, I recently just bought a tank ( around 147 litres) and we have only put the water in today. I was most likely wanting to get Guppies and Neon Tetras. I was hoping someone could tell me some other species that I could put in the tank and a recommended amount for each species. Also how long should I wait until I go to buy my fish. Thankyou! ( i will attach a picture, it was quite dirty then but we have put the filter in and removed the snails and its looking quite a bit better, if anyone has any suggestions for what else i need to add to it, it would be much appreciated.)