ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Thorius minydemus | CR | |
| Thorius munificus | CR | |
| Thorius narisovalis | CR | |
| Thorius pulmonaris | EN | |
| Thorius schmidti | EN | |
| Thorius smithi | CR | |
| Thorius spilogaster | CR | |
| Thoropa lutzi | EN | |
| Thoropa petropolitana | VU | |
| Threskiornis solitarius | Réunion Solitaire | EX |
| Thrigmopoeus insignis | Notable Large Burrowing Spider | VU |
| Thripophaga macroura | Striated Softtail | VU |
| Thylogale browni | New Guinea Pademelon | VU |
| Thylogale brunii | Dusky Wallaby | VU |
| Thylogale calabyi | Calaby’s pademelon | EN |
| Thylogale lanatus | Mountain pademelon | EN |
| Thynnichthys sandkhol | Sandkhol Carp | EN |
| Thyrreniellina josephi | VU | |
| Tibouchina gleasoniana | VU | |
| Ticodendron incognitum | VU | |
| Tijuca condita | Grey-winged Cotinga | VU |
| Tilapia busumana | VU | |
| Tilapia camerunensis | VU | |
| Tilapia cessiana | CR | |
| Tilapia coffea | CR | |
| Tilapia discolor | VU | |
| Tilapia flava | CR | |
| Tilapia guinasana | CR | |
| Tilapia gutturosa | CR | |
| Tilapia joka | VU | |
| Tilapia kottae | EN | |
| Tilapia sp. nov. 'jewel' | VU | |
| Tilapia sp. nov. 'little black' | VU | |
| Tilapia sp. nov. 'yellow-green' | VU | |
| Tilapia spongotroktis | CR | |
| Tilapia thysi | CR | |
| Tiliacora lehmbachii | EN | |
| Tillandsia brenneri | VU | |
| Tillandsia emergens | VU | |
| Tillandsia hirtzii | VU | |
| Tillandsia indigofera | EN | |
| Tillandsia marnieri-lapostollei | VU | |
| Tillandsia polyantha | EN | |
| Tillandsia portillae | EN | |
| Tillandsia pretiosa | VU | |
| Tillandsia raackii | VU | |
| Tillandsia rhodosticta | VU | |
| Tillandsia rubroviolacea | EN | |
| Tillandsia sodiroi | VU | |
| Timonius jambosella | CR |