Phrase used by Nano community to warn against coins with fees, a.k.a. 'shitcoins' as a poor investment. Especially those which will have $40 fees after two more reward halvings or at only 6tps usage in a world of 7.8b people.
Some people may think that this aquatic animal is pronounced fish. They however, are wrong. It is pronounced feesh. The plural of feesh is foowsh, and a group of foowsh are called a foowshling.
I thought I saw one feesh but it was actually a few foowsh that drifted away from their foowshling