Practical, hands-on fish advice, organised by what you are actually trying to sort out.
Health
A fish that ignores food is not always sick. Here is what actually causes fish to stop eating, from water quality and temperature to stress and stocking, and when it is genuinely a problem.
Breeds
Neon tetras look easy because they are cheap and everywhere, but a lot of them die from being kept as singles in uncycled tanks. Here is what a school actually needs.
Health
Tiny white grains scattered across a fish's body and fins are almost always ich, the single most common disease in home aquariums. Here is how it spreads so fast, how to treat the whole tank, and why stopping early lets it come straight back.
Health
A new aquarium looks ready the day you fill it, but the water is not. Here is what cycling actually means, how long it takes, and how to do it without losing fish to it.
Breeds
Guppies are sold as the simplest fish to keep, and mostly they are, but nobody warns you about the constant breeding or the overbred fancy strains. Here is honest guppy care.
Health
Fish hanging at the top of the tank and gulping are almost always short of oxygen, not sick in the way people first assume. Here is what causes it and how to fix it fast.