Umbridae
Mudminnows
Order: Esociformes
Small hardy freshwater fish tolerant of low-oxygen environments.
Species 7
Alaska blackfish
Dallia pectoralis
Central mudminnow
Umbra limi
Dallia admirabilis
Dallia admirabilis
Dallia delicatissima
Dallia delicatissima
Eastern mudminnow
Umbra pygmaea
European mudminnow
Umbra krameri
Olympic Mudminnow
Novumbra hubbsi