Fish

LC Ocellated Damselfish Neoglyphidodon bonang

LC Olive Barb කොළ පැහැති මස්සා · Systomus sarana

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VUEndemic Ompok argestes Ompok argestes

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LC Ompok ceylonensis Ompok ceylonensis

LC Onespot Snapper ஒற்றைப்புள்ளி சங்கரா · Lutjanus monostigma

LC Opisthopterus tardoore Opisthopterus tardoore

LC Orange Chromide තැඹිලි පැහැති මාළුවා · Pseudetroplus maculatus

LC Orange-Socket Surgeonfish Acanthurus auranticavus

LC Orangelined Cardinalfish Taeniamia fucata

LC Orangestripe Triggerfish Balistapus undulatus

LC Orbicular Cardinalfish Sphaeramia orbicularis

LC Oriental Sole நாக்கு மீன் · Brachirus orientalis

LC Oriental Sweetlips Plectorhinchus vittatus

LC Ornate Ponyfish අලංකාර කරල්ලා · Nuchequula gerreoides

LC Ornate Sandgoby Istigobius ornatus

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LC Ovoid Ponyfish බිත්තර හැඩැති කරල්ලා · Gazza dentex