Description: English: Crenichthys baileyi moapae: As the most prevalent fish on the Moapa Valley National Wildlife Refuge it is easy to spot a White River spring fish on the refuge. Spring fish feed on algae and other organisms floating in the water, but they also pick food off of rocks and sticks. Date: 30 August 2005, 11:01:43. Source: https://www.fws.gov/refuge/Moapa_Valley/multimedia/endemics.html. Author: USFWS.