| Citation | Kullander, S.O., 1989, Biotoecus Eigenmann and Kennedy (Teleostei: Cichlidae): description of a new species from the Orinoco basin and revised generic diagnosis.. J. Nat. Hist. 23:225-260. |
| Ref. | 86446 Kullander, S.O., 1989 |
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| Named Used as Valid | Biotoecus opercularis |
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| Locality | |
| Distribution | Central Amazonia in Brazil. |
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