Species Library — All Species
| Species | Adult size | Temperament | Min tank | Care | Accuracy |
|---|---|---|---|---|---|
| Redtail Notho Nothobranchius guentheri | 4.5–6 cm | Semi aggressive | 45 L | Hard | Verified |
| Redtail Splitfin Xenotoca eiseni complex | 5–8 cm | Semi aggressive | 120 L | Moderate | Verified |
| Reticulated Corydoras Brochis reticulata | 5–6.5 cm | Peaceful | 90 L | Moderate | Verified |
| Rhinogobius Wui Rhinogobius duospilus | 4–5 cm | Semi aggressive | 60 L | Moderate | Verified |
| Ropefish Erpetoichthys calabaricus | 30–40 cm | Semi aggressive | 540 L | Moderate | Verified |
| Rosy Barb Pethia conchonius | 6–10 cm | Peaceful | 120 L | Easy | Verified |
| Rosy Loach Physoschistura mango | 2.5–3.5 cm | Peaceful | 60 L | Moderate | Verified |
| Rosy Tetra Megalamphodus rosaceus | 3.4–4.5 cm | Peaceful | 70 L | Easy | Verified |
| Rotkeil Severum Heros sp. "Rotkeil" | 12–20 cm | Semi aggressive | 300 L | Moderate | Verified |
| Royal Farlowella Sturisomatichthys panamensis | 18–26 cm | Peaceful | 250 L | Moderate | Verified |
| Royal Pleco Panaque nigrolineatus | 40–50 cm | Semi aggressive | 600 L | Hard | Verified |
| Rubber Lip Pleco Chaetostoma milesi | 10–14.6 cm | Peaceful | 180 L | Moderate | Verified |
| Ruby Tetra Axelrodia riesei | 2–4 cm | Peaceful | 35 L | Moderate | Verified |
| Rusty Cichlid Iodotropheus sprengerae | 10–13.5 cm | Semi aggressive | 200 L | Easy | Verified |
| Sailfin Molly Poecilia latipinna | 8–15 cm | Peaceful | 200 L | Moderate | Verified |
| Sailfin Tetra Crenuchus spilurus | 5–6.5 cm | Peaceful | 80 L | Moderate | Verified |
| Salt and Pepper Corydoras Hoplisoma habrosum | 2.5–4 cm | Peaceful | 60 L | Easy | Verified |
| Salvini Cichlid Trichromis salvini | 15–22 cm | Aggressive | 350 L | Hard | Verified |
| Samurai Gourami Sphaerichthys vaillanti | 5–6 cm | Peaceful | 90 L | Hard | Verified |
| Saulosi Cichlid Chindongo saulosi | 7–9 cm | Aggressive | 200 L | Moderate | Verified |
| Scarlet Badis Dario dario | 1.5–2.5 cm | Semi aggressive | 30 L | Moderate | Verified |
| Scatophagus Argus Scatophagus argus | 25–35 cm | Peaceful | 700 L | Hard | Verified |
| Scheels Killifish Fundulopanchax scheeli | 5–6 cm | Peaceful | 45 L | Moderate | Verified |
| Schwartz's Corydoras Hoplisoma schwartzi | 5–8 cm | Peaceful | 100 L | Moderate | Verified |
| Scissortail Rasbora Rasbora trilineata | 8–12 cm | Peaceful | 180 L | Easy | Verified |
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