| Citation | Steen, J.B. and T. Berg, 1966, The gills of two species of haemoglobin-free fishes compared to those of other teleosts, with a note on severe anemia in the eel.. Comp. Biochem. Physiol. 18:517-526. |
| Ref. | 2309 Steen, J.B. and T. Berg, 1966 |
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| Named Used as Valid | Perca fluviatilis |
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