A Fishician collection · 8 guides
Fish health & behaviour
Get to know your fish, plan new arrivals and recognize changes that need attention.
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Explore fish health & behaviour
Search the whole libraryNew to this topic? Start with Reading normal behaviour, the first guide below.
Reading normal behaviourKnow each fish's normal so a change means something.2 min read
Maintenance and observationA routine built around what the tank shows you.2 min read
Stocking and compatibilityAdult size, water overlap, space and temperament.2 min read
Acclimating new arrivalsWhat happens in the bag and why bag water stays out.2 min read
Quarantine and biosecuritySeparate new arrivals to reduce disease transmission.2 min read
Early warning signs of illnessWhat to watch, what to check first, when to get help.2 min read
Feeding and nutritionNeeds differ by species. Overfeeding shows up in the water.2 min read
Reading a fish food labelIngredients, guaranteed analysis, size and storage.2 min read
Educational, not veterinary advice. Check species needs against current sources, follow the current label for any product, and see a qualified aquatic veterinarian for severe, urgent or uncertain health problems. How Fishician sources and reviews guides. Photographer credits and licenses appear beneath the relevant guide images.

