eastern mudminnow References eastern mudminnow fish Ask Anything Homework Help Also known as: Umbra pygmaea, rockfish Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: mudminnowIn North America the eastern mudminnow (U. pygmaea) is sometimes called rockfish, and the central mudminnow (U. limi) mudfish or dogfish. Mudminnows are often used as bait and sometimes kept in home aquariums. Read MoreIn North America the eastern mudminnow (U. pygmaea) is sometimes called rockfish, and the central mudminnow (U. limi) mudfish or dogfish. Mudminnows are often used as bait and sometimes kept in home aquariums. Read More