Bristlenose Pleco

Environment

Minimum 100-liter aquarium. Soft, slightly acidic to neutral water (pH 6-7.5), temperature 22-28°C, GH 5-15. Provide numerous hiding spots: driftwood, PVC tubes, caves, slate. Driftwood is essential as they rasp wood to aid digestion. Subdued lighting preferable. Good water flow and oxygenation. Regular water changes (10% weekly).

Feeding

Primarily herbivorous: spirulina pellets, zucchini slices, cucumber, blanched spinach. Supplement with sinking pellets and occasionally meaty prey (bloodworms, brine shrimp). Feed in the evening, remove uneaten vegetables after 24h. Do not rely solely on tank algae.

Health & common diseases

Ancistrus are robust but can be affected by fin rot due to stress or poor water quality, and by ichthyophthirius (white spot) during sudden temperature changes. They are sensitive to nutritional deficiencies (lack of plant fiber) causing weight loss and digestive problems. Overcrowding or lack of shelter increases stress and weakens their immune system. Maintain clean water with regular changes, stable temperature (24-27°C), and a varied diet rich in plant matter to prevent diseases.

Tips & tankmates

Easy cohabitation with most peaceful species. Avoid overcrowding of Loricariidae (territoriality between males). Excellent aquarium breeder: the male guards eggs in a cavity. Caution not to release into the wild: Ancistrus can become invasive in certain warm regions. Consider welfare: multiple hiding spots, floor space, provision of wood.

Sources

• Seriously Fish - Ancistrus sp.
• PlanetCatfish.com
• Fishbase - Ancistrus