Wiktionary
fishdom
n. The state of being a fish, or of belonging to the world of fish; fish collectively.
Wikipedia
Fishdom
Fishdom is a freemium match-three puzzle video game released by Playrix on December 10, 2015 for iOS. Fishdom was released for Google Play and Kindle users in March, 2016.
Usage examples of "fishdom".
Unfortunately this white-bellied, orange-backed representative of fishdom was hand-size only to Mignureal.