We respond to Elijah for his problem concerning (as often) poorly understood dead fish in its freshwater aquarium:

"My name is Elias, from 3 months now in my tank (60 of acquadream acquatlantis filter BIOBOX with" wool "synthetic canolicchi) we went to check out a number of deaths. originally housed the aquarium catfish 5 neon 2 guppies and 2, however, about 3 months ago after a few days of each other four neon forsake me, however, since the body without signs they left and think of a disease considered who were with me for over 3 years the case was filed (also considering the average lifespan reported on the Internet) as a natural death, but ultimately the deaths are reviewed, in 2 days I have left 1 catfish and 1 guppy, this But once you noticed how ragged fins on the edges (and died not many hours since the morning they were alive and the discovery took place before noon). aquarium are the java moss and a well developed Echinodorus. may depend on what the deaths?
thanks and congratulations for the site, Elijah "

Hello Elijah, I'd forget the Neon 3, while for the last 2 fish need to understand what condition is your water. So nitrates and nitrites should be checked to find out and maybe change the regime of water changes and / or add plants. In summer, however, can also be other problems such as the excessive temperature and therefore also the shortage of oxygen. So in the summer is a bit 'harder to understand the real reason of the death of a fish, but we can certainly do so to rule out certain causes, and year after year to learn from mistakes.
I myself this year I underestimated the heat and I lost all guppies that were growing, the blue moscow, which are also very difficult to find for sale.