Armored Catfishes (Loricariidae)

Hypancistrus Monte Dourado

Hypancistrus sp. L411

Hypancistrus Monte Dourado, known scientifically as Hypancistrus sp. L 411, belongs to the family Loricariidae. This catfish originates from South America. Its primary habitat is the Jari River basin, which is one of the numerous tributaries of the Amazon River. This river serves as a natural border between the Brazilian states of Pará and Amapá. The fish gets its name from the small town of Monte Dourado, located on the Jari River, as this is where active harvesting of this species for export takes place.

Tank
from 200 L (53 gal)
Temperature
25 – 30 °C (77 – 86 °F)
Size in aquarium
13 cm (5.1 in)
Acidity
pH 5–7
Natural rangeRange on the map
  • Pará area
  • Amapá area

Tank conditions

Plan the tank stocking
Temperature
25 – 30 °C (77 – 86 °F)
Water pH
Slightly acidic (5) – Neutral (7)
Water dH
Very soft (1) – Hard (12)
Water salinity
no salt (freshwater)
Size in aquarium
13 cm (5.1 in)
Lifespan
10 years
Temperament
Peaceful (regular)
Toward small fish
not a predator
Required aquarium volume
from 200 L (53 gal)
Lighting
dimmed or moderate
Substrate
fine sand
Water flow
weak or moderate
Feeding
Sinking (any)
Keeping
Both solitary and in group flexible
  • Lifespan. A lifespan to expect under good care, not a measured value: it depends heavily on tank volume, water quality and diet — and for selectively bred forms, on their origin as well.
  • Toward small fish. Based on the Predators category in the catalog or the temperament in the species parameters. “A risk to small fish” means the species is not a predator by habit, yet will swallow any fish that fits in its mouth.
  • Required aquarium volume. This is a husbandry recommendation, not a measured value: the volume depends on the keeping mode (both solitary and in group (flexible)), footprint, decor and tank mates.

Care and keeping

Description

Adults of this species reach approximately 13 cm in length. Visually, they show significant resemblance to a related species, the Scribbled Pleco (Hypancistrus sp. L260). At a young age, both fish are almost identical, but as they mature, noticeable differences emerge. Hypancistrus Monte Dourado has a body pattern of even black and white lines, with the light stripes usually slightly wider than the dark ones. Over time, the coloration may become less contrasting, and the fish acquires an almost entirely gray hue.

Habitat

The species inhabits South America, in the basin of the Jari River, which is a tributary of the Amazon and a natural border between the Brazilian states of Pará and Amapá. In nature, the fish prefer areas with soft, slightly acidic water and numerous hiding places among rocks and snags.

Behavior and Compatibility

This fish is considered peaceful and undemanding, but it requires hiding places. It is important to avoid keeping them with large, aggressive, or territorial species. Excellent tank mates include small Tetras, Corydoras catfish, and other peaceful species.

Care and Maintenance

Hypancistrus are rather modest in size and exhibit a relatively sedentary lifestyle, so a 70–80 L aquarium will be sufficient for a single specimen. If you plan to keep 3–4 fish, an aquarium of 200 L or more will be required. Essential elements in the aquarium decor are hiding places created from driftwood, rock piles, or other natural or artificial materials. These fish are not prone to damaging aquatic plants, allowing for their free use in decoration. Otherwise, the decor can be chosen at your discretion. The species prefers warm, soft, slightly acidic water and moderate, subdued lighting. The diet should be based on protein-rich foods, such as dry, frozen, or live foods (e.g., bloodworms, brine shrimp).

Diet

The diet of these fish should primarily consist of protein-rich foods. These can be dry, frozen, or live foods, such as bloodworms and brine shrimp.

Breeding and Reproduction

Breeding occurs in enclosed hiding places where the female lays her eggs. The male takes on the role of guarding the clutch and caring for the offspring, fanning the eggs with his fins to ensure oxygen flow. To stimulate spawning, it is recommended to use high-quality protein foods, maintain water cleanliness, and provide appropriately sized ceramic or stone tube caves.

Diseases

The species is sensitive to deteriorating water quality, accumulation of organic waste, and sharp fluctuations in environmental parameters. Under poor keeping conditions, bacterial infections may develop, manifesting as skin or fin damage. Prevention includes regular water changes, effective filtration, and maintaining stable hydrochemical conditions.

How to choose

When choosing, pay attention to the fish's activity in the evening and the absence of external damage, such as ulcers, whitish spots, or fin rot. Healthy specimens should have a rounded belly, indicating no emaciation. Avoid purchasing fish with sunken sides or signs of apathy, as this may indicate adaptation problems or internal parasitic diseases.

Compatibility

There are no pair reviews for this species yet — check tankmates in the matcher.

All tankmates

Plants and this fish

Matching water does not mean the plant will stay intact.

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Hypancistrus Monte Dourado get?

An adult reaches 13 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Hypancistrus Monte Dourado need?

The recommended volume is 200 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Hypancistrus Monte Dourado need?

Temperature 25–30 °C, pH 5–7, hardness 1–12 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Hypancistrus Monte Dourado live?

Around 10 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Hypancistrus Monte Dourado aggressive?

Temperament: peaceful (regular). Keep this in mind when choosing tank mates.

How many Hypancistrus Monte Dourado should be kept together?

Recommended setup: both solitary and in group (flexible). Ignoring this is a common cause of stress and disease.

What does Hypancistrus Monte Dourado eat?

Diet type: sinking (any). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Hypancistrus Monte Dourado?

The scientific name of the species is Hypancistrus sp. L411, family Armored Catfishes (Loricariidae).

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Categories
Catfish