In literal terms, minnow refers to a small fish or an individual or organization that is regarded as insignificant. The same idea can be implemented in cryptocurrency investment. In the crypto market, a minnow is someone who holds only a small amount of digital assets.
In order words, during their buy or sell, it is going to have a very insignificant impact on the market. Minnow is completely at odds with the term whale, which defines a person or institution holding a large portion of the crypto assets in the market.
While there is not a defined threshold that determines a minnow, research suggests that the majority of crypto investors fall into this category.