Specimens: 30,000 of which 1,000 are now threatened or endangered.
- Santa Ana Sucker
- Utah Lake Sculpin - 2 of 9 existing specimens
- Robusta jordani
Major groups represented:
- Cyprinids - 20,000
- Salmonids - 10,000 whole specimens and tissues
Geographic representation: Western United States especially Utah and parts of Nevada.
The MLBM fish collection has the best O. clarki specimens in the U.S.