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We love fascinating goldfish facts here at The Goldfish Tank – and there really are some weird and wonderful facts about goldfish!
Check out our top 10 goldfish facts below and then – if ten facts isn’t enough for you! – learn even more goldfish facts here!
Top 10 goldfish facts
Goldfish Fact #1: Goldfish don’t have stomachs!
Goldfish don’t have stomachs and should therefore be fed easily digestible food in lots of small feeding sessions, rather than lots of food at once. This is also why goldfish produce so much waste and why you need a filter to keep their water clean.
Goldfish Fact #2: Goldfish have been known to live for over 40 years!
With the proper care, goldfish can live for decades. This goldfish was said to be 45 years old.
Goldfish Fact #3: The collective noun for goldfish is “a troubling”
Just like you’d say “a herd of cows”, you’d say “a troubling of goldfish”!
Goldfish Fact #4: Goldfish can recognise people’s faces
Goldfish can tell different faces apart and are able to distinguish between different shapes, colors and sounds.
Goldfish Fact #5: Goldfish have a memory-span of at least three months
Many people say that goldfish have a memory of just a few seconds, but this is a myth! Goldfish have a memory span of at least three months!
Goldfish Fact #6: Goldfish can grow to over a foot long
Goldfish can be stunted by being kept in tanks that are too small for them and where the water quality is poor. This means that they don’t reach their full potential size. However, goldfish can grow to be over a foot long when kept in the right environment.
Goldfish Fact #7: Selective breeding has led to a huge variety of goldfish shapes and colours
Humans have bred many different varieties of goldfish.
Goldfish Fact #8: Goldfish can’t close their eyes!
Goldfish have no eyelids, so they have to sleep with their eyes open!
Goldfish Fact #9: Goldfish have been kept as pets for over 2000 years
Keeping pet goldfish dates all the way back to ancient China!
Goldfish Fact #10: Goldfish can see more colors than humans can!
Goldfish don’t like to be kept in the dark and, unlike humans, they are able to see ultra-violet and infra-red light.
Want more? View more goldfish facts here!