I got a 20 gallon long from a friend. I have no idea what fish I want to put in it...help?
We need to know the water parameters. Some fish must have soft acidic water, some must have hard basic water, and some will manage in the middle. Knowing the water is necessary to narrow down oiptions with fish. It is much easier and wiser to have fish suited to your water, than to decide on fish and then have to somehow adjust the water parameters which can be done but can be very involved and expensive. My article on this will explain the relationship:I dont even have the tank set up right now. All i have is a tank. No light, no filter, no heater. Im just trying to get ideas for when i do get that stuff what fish i want?