ARKive’s Most Wanted Species
ARKive’s most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Obelus despreauxii | VU | |
| Obelus moratus | VU | |
| Oblivia ceronii | VU | |
| Obovaria haddletoni | Haddleton Lampmussel | CR |
| Obovaria jacksoniana | Southern Hickorynut | VU |
| Obovaria retusa | Ring Pink | CR |
| Obovaria rotulata | Round Ebonyshell | EN |
| Occidozyga borealis | Northern Frog | VU |
| Occidozyga diminutiva | Small-headed Frog | VU |
| Occirhenea georgiana | EN | |
| Oceanodroma monteiroi | Monteiro's Storm-petrel | VU |
| Ochotona argentata | Silver Pika | CR |
| Ochotona hoffmanni | Hoffmann’s pika | EN |
| Ochotona iliensis | Ili pika | EN |
| Ochotona koslowi | Kozlov's pika | EN |
| Ochrosia fatuhivensis | EX | |
| Ochrosia inventorum | CR | |
| Ochrosia kauaiensis | EN | |
| Ochrosia kilaueaensis | Holei | CR |
| Ochrosia nukuhivensis | EX | |
| Ochrosia tahitensis | EX | |
| Ochyraea tatrensis | CR | |
| Ocotea argylei | VU | |
| Ocotea basicordatifolia | EN | |
| Ocotea catharinensis | VU | |
| Ocotea kenyensis | VU | |
| Ocotea lancilimba | CR | |
| Ocotea otuzcensis | VU | |
| Ocotea pachypoda | CR | |
| Ocotea raimondii | VU | |
| Ocotea robertsoniae | VU | |
| Octodon bridgesi | Bridges's Degu | VU |
| Octodon pacificus | CR | |
| Octoknema orientalis | VU | |
| Odontophorus atrifrons | Black-fronted Wood-Quail | VU |
| Odontophorus dialeucos | Tacarcuna Wood-Quail | VU |
| Odontopodisma rubripes | VU | |
| Odontoscion eurymesops | Galapagos croaker | VU |
| Odorrana amamiensis | Amami Tip-nosed Frog | EN |
| Odorrana junlianensis | VU | |
| Odorrana kuangwuensis | EN | |
| Odorrana supranarina | EN | |
| Odorrana tormota | VU | |
| Odorrana utsunomiyaorum | EN | |
| Odorrana wuchuanensis | CR | |
| Oecanthus laricis | Tamarack tree cricket | EN |
| Oedemasylus laysanensis | EX | |
| Oedipina alfaroi | VU | |
| Oedipina altura | CR | |
| Oedipina maritima | CR |
