Goldfish have relatively small brains compared to their body size, with the average brain weighing only about 0.5 grams. Despite this, they are capable of complex behaviors and learning, such as remembering tasks and navigating mazes. Goldfish have been shown to possess a certain level of cognitive ability, which challenges the common misconception that they have a three-second memory span. Overall, their brain capacity allows them to function effectively in their environment.
The size of a goldfishes brain would depend upon the size of the goldfish. It is however quite large enough to enable the goldfish to survive. By comparison to mammals though it is small.
It depends on the size of it. If it's smaller, it has less capacity, and it it's larger, it has more capacity. Although, goldfish are rather unhappy in bowls. I recommend an aquarium with proper filtering.
Fairly intelligent. Well they can count to five!
There is no such thing as "brain capacity"
Yes a lot bigger.
20 ml
It is impossible to gain a 'bond' with a Goldfish. They have such a small brain so they can only gain memory for three seconds, after that time is up they forget everything.
My larger goldfish has gray-ish black-ish areas around its gills and head. Is this a sign of brain damage??? It has been showing no other signs besides this. PLEASE HELP! Sorry about putting the full question in the answer. ^.^
They could be seeing themselves in the reflection of the glass of your tank, but since goldfish do not have the capacity to recognize themselves in a reflection they think it is another goldfish and attempt to swim towards it. It has nothing to do with having a short memory span as the previous answer said, because goldfish actually have a long-term memory span of about three months.
Humans DO use their full brain capacity. Scientists can detect and record activity in every area of the brain. But our conscious brain only uses 10%... the rest of the brain takes care of internal functions though the subconscious brain.
the size of a grain.
Considering that goldfish cannot walk, do not have arms, legs, or hands to yield a weapon, and probably do not have the thought capacity to plan anything beyond their next meal, it's highly unlikely.