Histrio trochus
Trochus histrio
Trochus histrio has a slender conical shell, often adorned with brown or red flames on a light background. It reaches 3-4 cm in diameter. It grazes algae on rocks and glass with a powerful radula. Mostly active at night, it can also be seen during the day in calm aquariums. It moves with measured slowness but covers large distances. It is very tolerant of parameter fluctuations. It poses no danger to hard or soft corals. Reproduction in captivity is rare but possible under optimal conditions.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 24–28 |
| pH | 8.1–8.4 |
| GH | 7–9 |
| KH | 8–12 |
| NO₃ | ≤ 20 |
| PO₄ | ≤ 0.1 |
Care
Care notes
Temperature 24-28°C, pH 8.1-8.4, salinity 1.023-1.025. A minimum volume of 40 liters is sufficient for one individual. It feeds on natural algae, but can be supplemented with dried algae. Nitrates should be kept below 20 ppm, phosphates below 0.1 ppm. It is compatible with all peaceful fish and invertebrates. Avoid predators such as angelfish or crabs. Slow acclimation is recommended. It can be kept in groups, but sufficient space is needed to avoid food competition.