| Key to Mexican Etheostoma (Oligocephalus). |
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| Norris, S.M. and W.L. Minckley 1997. Two new species of Etheostoma (Osteichthyes: Percidae) from Central Coahuila, Northern Mexico. Ichthyol. Explor. Freshwat. 8(2):159-176. Ref No [26684] Key No. [1131] |
| Entered by: Yap, Sheryl Date: 2005-02-16 |