Hey Guys,
My nan has a 65L tank with 3 cories, 2 pakistan loaches, 3 neon tetras, 2 black tetras, 3 mollies (juvinile ones) and supposedly 4 guppies. However, we have noticed that one by one, the guppies are disappearing. They swam to the top of the tank and then within half a day, dead. We...