| Species | Adult size | Temperament | Min tank | Care | Accuracy |
|---|---|---|---|---|---|
| Tire Track Eel Mastacembelus armatus | 50–90 cm | Peaceful | 700 L | Hard | Verified |
| Tropheus Duboisi Tropheus duboisi | 10–14 cm | Aggressive | 300 L | Hard | Verified |
| True Rummy Nose Tetra Petitella rhodostoma | 4–5 cm | Peaceful | 100 L | Moderate | Verified |
| Twoline Skiffia Neotoca bilineata | 4–6 cm | Peaceful | 90 L | Moderate | Verified |
| Uaru Cichlid Uaru amphiacanthoides | 25–30 cm | Peaceful | 750 L | Hard | Verified |
| Upside-Down Catfish Synodontis nigriventris | 7–9.6 cm | Peaceful | 100 L | Easy | Verified |
| Vampire Pleco Leporacanthicus galaxias | 18–23 cm | Semi aggressive | 350 L | Hard | Verified |
| Vampire Shrimp Atya gabonensis | 10–14 cm | Peaceful | 120 L | Moderate | Verified |
| Venezuelan Orange Corydoras Osteogaster cf. venezuelanus "Orange" | 5–6.5 cm | Peaceful | 80 L | Easy | Verified |
| Venustus Cichlid Nimbochromis venustus | 20–28 cm | Aggressive | 650 L | Moderate | Verified |
| Violet Goby Gobioides broussonnetii | 35–55 cm | Peaceful | 450 L | Hard | Verified |
| Weitzman Corydoras Hoplisoma weitzmani | 5–6 cm | Peaceful | 80 L | Moderate | Verified |
| Whiptail Catfish (Rineloricaria) Rineloricaria sp. | 10–13 cm | Peaceful | 120 L | Moderate | Verified |
| White Cloud Mountain Minnow Tanichthys albonubes | 3–4 cm | Peaceful | 54 L | Easy | Verified |
| White-Fin Ornate Tetra Megalamphodus bentosi | 4–5 cm | Peaceful | 70 L | Easy | Verified |
| Woodcat Duringlanis perugiae | 5–7 cm | Peaceful | 70 L | Moderate | Verified |
| Wrestling Halfbeak Dermogenys pusilla | 5–7.5 cm | Peaceful | 90 L | Moderate | Verified |
| X-Ray Tetra Pristella maxillaris | 4–5 cm | Peaceful | 60 L | Easy | Verified |
| Yellow Lab Cichlid Labidochromis caeruleus | 8–12.5 cm | Semi aggressive | 180 L | Easy | Verified |
| Yellow Tail Acei Hybrid Pseudotropheus hybrid | 10–15 cm | Semi aggressive | 300 L | Moderate | Verified |
| Yoma Danio Danio feegradei | 6–8 cm | Peaceful | 100 L | Moderate | Verified |
| Yoyo Loach Botia almorhae | 10–15.5 cm | Semi aggressive | 350 L | Moderate | Verified |
| Zebra Danio Danio rerio | 3–5 cm | Peaceful | 70 L | Easy | Verified |
| Zebra Danio Longfin Danio rerio longfin domestic form | 4–5 cm | Peaceful | 60 L | Easy | Verified |
| Zebra Loach Botia striata | 7–10 cm | Peaceful | 180 L | Moderate | Verified |