The fish are living animals, not just a nutrient source. Species suitability, legal availability, temperature, oxygen, stocking, feeding, and health care belong in the decision before fish go into a tank. Brian’s limited firsthand tilapia and minnow experience is distinguished from researched advice on other fish.
Choose fish
Consider edible and ornamental options, your climate, and the responsibility of keeping each species.
- Best Fish for Backyard Aquaponics
- Aquaponics Without Edible Fish
- Goldfish in Aquaponics
- Tilapia vs Koi
- Tilapia, Catfish, or Bass
Stocking and arrival
Avoid choosing fish numbers from tank capacity alone. Plan stocking around biological load and introduce new fish carefully.
Feeding
Feed in a way the system can support, and watch for uneaten feed or declining water quality.
Health and quarantine
Learn what changes in behavior or appearance deserve attention and how a separate quarantine setup works.
Explore related topics
These sections connect to other parts of operating a backyard aquaponics system.