Situation guide
Water quality first, then stress, then disease — the check order.
Appetite loss in fish is checked in a fixed order: water, then temperature, then environment, then the food itself, and disease last. This guide explains why ammonia suppresses feeding before anything else is visible, how food fails to reach bottom and nocturnal feeders in a competitive tank, how to wean a wild-caught
Fish have no diaphragm and cannot truly vomit. Food spat back out is usually a pellet-size or water-quality issue, but repeated refusal with weight loss needs veterinary input.
Spotting white spots, frayed fins, or bloating in your aquarium? Learn how to visually diagnose and successfully treat the four most common fish diseases, Ich, Fin Rot, Velvet, and Dropsy, with our step-by-step quarantine and treatment guide.
Fish food is built on marine oils, which are the fastest-oxidising fats there are, and on vitamins that degrade in air, heat and damp. A large tub bought to save money spends most of its life feeding degraded food, and the effects show up as slow growth, faded colour, poor healing and infections rather than as anything
