If quiz person your the word that matching a plan is the aquarium that you raise dead fish, carry these 3 pieces of pictures, I can detect the " of " case of injustice that your fish dies.
1.
What you raise is tropical fish, very clear need heats club ah, this fish is done not have in friendly aquarium, see your picture film date was on December 8, this is in the winter ah eldest brother, even if the central heating in your home, temperature namely many degrees 20, tropical fish wants to survive in health of ability of 25 degrees of above.
2.
See your water quality, water system is hoar, hazy, apparent nitrify system was not built, the harmful material such as nitrogen of the ammonia in water is overmuch, fish by kill with poison, as a result of the limitation that your aquarium filters, how much cannot estimation put to train bacterium filter capable person, suggest you add bit of biochemistry cotton more, reduce next raise density.
3.
The need before new fish enters a crock crosses water, let new fish get used to new water quality, reckon at this o'clock you also were not done good, I did not say particular procedure more, can check on the network examine, the procedure is very simple, but it is very important one step, must try to take seriously.
Each fish is a life, the proposal is all think what piscicultural friend learns next basicses first to raise knowledge, reentry hand is not slow also, fish not be to water can live absolutely.
