Fish

LC Ocellated Damselfish Neoglyphidodon bonang

LC Olive Barb Systomus sarana

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VUEndemic Ompok argestes ஓம்போக் அர்ஜெசுடெசு · Ompok argestes

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LC Ompok ceylonensis Ompok ceylonensis

LC Onespot Snapper Lutjanus monostigma

LC Opisthopterus tardoore Opisthopterus tardoore

LC Orange Chromide 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 Brachirus orientalis

LC Oriental Sweetlips Plectorhinchus vittatus

LC Ornate Ponyfish Nuchequula gerreoides

LC Ornate Sandgoby Istigobius ornatus

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LC Ovoid Ponyfish Gazza dentex