ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Isopora cuneata | VU | |
| Isopora togianensis | EN | |
| Isotomus barbarae | VU | |
| Isotomus jarmilae | EN | |
| Isthmohyla graceae | CR | |
| Isthmohyla insolita | Isthmohyla | CR |
| Isthmohyla pictipes | EN | |
| Ivindomyrus opdenboschi | VU | |
| Ixalodectes flectocercus | CR | |
| Ixobrychus novaezelandiae | New Zealand Little Bittern | EX |
| Ixonanthes khasiana | VU | |
| Ixora albersii | VU | |
| Ixora degemensis | EN | |
| Ixora lawsoni | EN | |
| Ixora malabarica | VU | |
| Ixora pudica | NT | |
| Ixora saulierei | EN | |
| Ixos siquijorensis | Streak-breasted Bulbul | EN |