Most early fish deaths trace back to a handful of preventable water-chemistry mistakes. Here is what to fix before, not after, stocking a new tank.
Saltwater tanks look stunning, but freshwater is the more forgiving place to start. How the nitrogen cycle works, why saltwater leaves less room for mistakes, and a sensible first-tank setup and routine.
Fish are not the pet you get when you do not want a pet. Cycling a tank, a weekly rhythm and the discipline of not overfeeding make an aquarium an unusually good teacher.