| Species | Adult size | Temperament | Min tank | Care | Accuracy |
|---|---|---|---|---|---|
| Haplochromis Obliquidens Haplochromis latifasciatus | 8–12 cm | Semi aggressive | 200 L | Moderate | Verified |
| Harlequin Rasbora Trigonostigma heteromorpha | 3–5 cm | Peaceful | 60 L | Easy | Verified |
| Harlequin Rasbora Variant Trigonostigma heteromorpha domestic form | 3.5–5 cm | Peaceful | 60 L | Easy | Verified |
| Head and Tail Light Tetra Holopristis ocellifera | 4–5 cm | Peaceful | 70 L | Easy | Verified |
| Hengeli Rasbora Trigonostigma hengeli | 2.5–3 cm | Peaceful | 60 L | Easy | Verified |
| Hi Fin Platy Xiphophorus maculatus domestic form | 4–6 cm | Peaceful | 60 L | Easy | Verified |
| High Fin Swordtail Xiphophorus hellerii | 7–12 cm | Peaceful | 140 L | Moderate | Verified |
| Hillstream Garra Ceratogarra cambodgiensis | 12–24 cm | Peaceful | 350 L | Moderate | Verified |
| Hillstream Loach Sewellia lineolata | 5–6.5 cm | Peaceful | 100 L | Hard | Verified |
| Honduran Red Point Cichlid Amatitlania sp. 'Honduran Red Point' | 8–12 cm | Semi aggressive | 150 L | Moderate | Verified |
| Honey Gourami Trichogaster chuna | 4–5.5 cm | Peaceful | 60 L | Easy | Verified |
| Horseface Loach Acantopsis dialuzona | 15–20 cm | Peaceful | 300 L | Moderate | Verified |