Thanks! The aquarium has 750l (250x50x60), and the fish are: scalar(10) , Epalzeorhynchos bicolor and frenatus(10), Crossocheilus Siamensis(2) , Puntius denisonii( +/- 25), Farlowella acus(1 ;c 3 died), Corydoras paleatus(+/- 15), Poecilia reticulata and Xiphophorus hellerii (20-30), Paracheirodon innesi(50-100 :D) and +/- 10 gouramis. I think It's all :D (sorry for the names and language)