We asked readers to tell us the one thing about caring for goldfish that they found most surprising. Here are their answers, along with a couple of our own!
Were you surprised?
1. The tank size needed to keep goldfish properly
“I knew bowls were way too small but I never thought it would be 20-30 gallons for a single fish!” – Anna
2. The idea of “good bacteria” and the nitrogen cycle
“I would never have dreamed you had to wait to cycle a tank! And the thought of good bacteria growing in your filter? I was so prepared to sterilize the filter along with everything each cleaning.” – Sereya
“Cycling AND making sure that if you switch to a bigger tank that you bring some of the “good bacteria” from the old tank and put it in the new tank AND running old and new filter together for a couple weeks to make sure that the new “good bacteria” gets incorporated into the tank properly” – princesskate
3. Their friendly personalities
“They’re such a sweet fish. Especially Orandas and ranchu.” – TREE
“I was also so very surprised with just how social and personable the goldies were. Even after years of tropical tanks the goldies are just so friendly and interactive!” – Sereya
4. The variety of a proper goldfish diet
“My fish eat better than me!” – ZIGGYGIRL
5. How much keeping goldfish costs
“The expense of keeping a few fish which cost under a tenner!” – IanMcLeish
6. How long they can live
Find out more about how long goldfish live.
7. How big they can grow
Find out more about how big goldfish can grow!