 Oliotius oligolepis EILANDBARBE |  |
 Opsarius bendelisis FORELLENBÄRBLING |  |
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 Oryzias latipes MEDAKA |  |
 Osteoglossum bicirrhosum AROWANA |  |
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 Otocinclus affinis GESTREIFTER-OHR... |  |
 Otocinclus hoppei OHRGITTER... |  |
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 Otocinclus macrospilus OHRGITTER... |  |
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 Otocinclus vittatus LÄNGSSTREIFEN... |  |

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