Golden otocinclus

Macrotocinclus affinis

Wild range: Amazon Basin (South America)

At a glance: Golden otocinclus care

Compiled reference information. Review the care notes and original sources below.

What temperature is listed for Golden otocinclus?

The compiled profile lists 20.0–28.0 °C for Golden otocinclus (Macrotocinclus affinis). Check the original sources below for context and differing recommendations.

What tank size is listed for Golden otocinclus?

The profile lists a minimum tank volume of 7.9 US gallons (30.0 liters). Volume alone does not establish suitability; consider dimensions, group size and other inhabitants alongside the full care notes.

What pH is listed for Golden otocinclus?

The compiled profile lists a pH of 6.0–7.5. Review the cited care sources alongside the other water parameters in this profile.

Natural habitat

Otocinclus Catfish are native to the Amazon Basin of South America, thriving in heavily planted tanks with soft algae growth. These fish prefer established, stable aquariums that provide both shelter and food sources in the form of algae.

Where they are found

Originate from the calm waters of South America, often found in small streams and rivers where vegetation is abundant. Their natural habitats consist of dense plant life and a diverse range of microorganisms which aid in their dietary needs and provide necessary shelter from predators.

Aquarium care

To keep Otocinclus catfish healthy, ensure your aquarium is well-established with abundant algae and biofilm present. They prefer a mature tank with gentle filtration, and they thrive in planted environments that offer cover and grazing areas. Regular water changes and maintaining consistent water parameters are crucial for their well-being.

Feeding

Otocinclus prefer soft algae that grows on hard surfaces in the tank. Additional dietary options include algae wafers and fresh vegetables like zucchini slices. It may take time for them to accept new food items, so monitoring their consumption is key to avoiding waste.

Compatibility

Otocinclus catfish are peaceful and can be housed with other small, non-aggressive species. Ideal tank mates include tetras, rasboras, and dwarf shrimp. Avoid larger or aggressive species that might see them as food.

Breeding

Breeding Golden Otocinclus can be a challenge, as they require specific conditions. They are egg layers, typically laying their eggs on flat surfaces under plants or in crevices. To encourage breeding, ensure a well-conditioned pair is placed in a breeding tank with soft, slightly acidic water, and provide plentiful light and food.

Sources

Compiled from multiple independent care sheets — not copied from a single site.