Goldfish Quiz

How much do you really know about goldfish? 8 questions — learn as you go!

📖 Read all 8 goldfish quiz questions and answers
  1. How big can a common goldfish grow with the right care?✅ Over 10 inches longCommon goldfish can pass 10 inches — they only stay small when they are kept in cramped water.
  2. How long can a well-kept goldfish live?✅ 10 to 20 yearsGoldfish are a long commitment — 10 to 20 years is normal in a proper tank.
  3. Is a small bowl a good home for a goldfish?✅ No — they need a big filtered tankGoldfish are messy and grow large, so they need a big, filtered tank rather than a bowl.
  4. Do goldfish need a heater?✅ No — they are coldwater fishGoldfish are coldwater fish and do fine at normal room temperature.
  5. Why does a goldfish tank need extra-strong filtration?✅ Because goldfish are messy and make a lot of wasteGoldfish produce a lot of waste, so the filter has to work harder than for most fish.
  6. Is it true that a goldfish only remembers things for 3 seconds?✅ False — they remember for monthsIt is a myth: goldfish can remember things for months and learn simple routines.
  7. Do goldfish do better alone or with other goldfish?✅ With company, in a big enough tankGoldfish are social and are happier with other goldfish, as long as the tank is big enough.
  8. What should you feed a pet goldfish?✅ Sinking goldfish pellets plus a few veggiesSinking pellets plus the odd blanched vegetable suit goldfish best — and go easy on the amount.