Armored Catfishes (Loricariidae)

Blue-Eyed Panaque

Panaque suttonorum

Panaque suttonorum, also known as the Blue-Eyed Panaque or Sutton's Panaque, belongs to the Loricariidae family, which includes armored catfish. In Venezuela and other South American countries, the word "panaque" is traditionally used as a general name for the entire genus of these fish. The name "Suttoni" is a Russian transliteration of the surname of Frederica Sutton, a doctor of science and ichthyologist from Venezuela, whose contribution to the study of the region's ichthyofauna was very significant.

Tank
from 250 L (66 gal)
Temperature
20 – 24 °C (68 – 75 °F)
Size in aquarium
28 cm (11 in)
Acidity
pH 6.2–7.5
Natural rangeRange on the map
  • Zulia area
  • Venezuela

Tank conditions

Plan the tank stocking
Temperature
20 – 24 °C (68 – 75 °F)
Water pH
Slightly acidic (6.2) – Neutral (7.5)
Water dH
Very soft (2) – Very hard (18)
Water salinity
no salt (freshwater)
Size in aquarium
28 cm (11 in)
Lifespan
12 years
Temperament
Semi-peaceful aggression when space is limited
Toward small fish
not a predator
Required aquarium volume
from 250 L (66 gal)
Lighting
dimmed
Substrate
any (no restrictions)
Water flow
weak or moderate
Swimming level
near the bottom
Feeding
Plant-based algae, vegetables
Keeping
Solitary
  • 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 (solitary), footprint, decor and tank mates.

Care and keeping

Description

Adults of this species can grow up to 28 cm in length. The catfish's body is robust, protected by a dense "armor" of bony plates. The coloration is predominantly dark gray. A striking and characteristic feature is its blue eyes. On its large head, there is a semblance of long whiskers, which on the sides appear as tufts of stiff bristles. Similar bristles are also located along the edge of the pectoral fins. The mouth, resembling a suction cup and studded with rows of short teeth, is located on the underside of the head and is adapted for consuming wood fibers and algae.

Habitat

This catfish is an inhabitant of South American waters. Its natural range extends through the tributaries of Lake Maracaibo lagoon, located in northern Venezuela. It prefers to stay in the bottom layers, where it finds shelter among numerous snags and submerged fallen trees.

Behavior and Compatibility

The Blue-Eyed Panaque is characterized by a nocturnal lifestyle, so its peak activity occurs during twilight hours. During the day, it usually hides. In spacious aquariums with a sufficient number of shelters (e.g., snags), this species behaves as relatively peaceful. However, if space is insufficient, competition for territory may arise, sometimes escalating into skirmishes. Good compatibility is observed with fish that inhabit the water column or near its surface.

Care and Maintenance

For the comfortable keeping of one adult Blue-Eyed Panaque, an aquarium of at least 250 liters is required. Untreated natural snags are an important element of the decor, as this catfish feeds on wood fibers and algae growing on wood. Other decorative elements of the underwater landscape are not as significant. In natural habitats, the aquatic environment is stable, so for the well-being of the catfish, rather narrow ranges of temperature, pH, and dGH are necessary. It is sensitive to water pollution by organic waste. In addition to a continuously operating filtration system, regular aquarium cleaning is extremely important.

Diet

As mentioned earlier, the diet of Sutton's Panaque mainly consists of algae. In addition, the catfish readily consumes specialized sinking dry flakes, algae-based tablets, and pieces of fresh vegetables such as cucumber, peas, green beans, and potatoes.

Breeding and Reproduction

Breeding is not documented. Panaque are cave spawners: the eggs are laid in a narrow shelter and the male guards and ventilates the clutch. This species is collected from the wild in limited numbers, large specimens need a great deal of space, and no reliable way to sex the fish or trigger spawning has been described.

Diseases

This species is susceptible to diseases typical for armored catfish, which arise from improper keeping conditions. The most common are bacterial infections of the skin and fins, as well as parasitic infestations under stress or poor water quality. Fish are extremely sensitive to low oxygen levels and the accumulation of organic waste, which can lead to a general weakening of the immune system. Prevention involves maintaining high filtration intensity, regular water changes, and ensuring stable current.

How to choose

When purchasing, attention should be paid to the fish's activity during twilight hours and the condition of its skin. Healthy individuals should have clean coloration without whitish film, ulcers, or fin damage. It is important to visually assess the fish's plumpness: a sunken abdomen is a sign of emaciation or internal parasites. At the store, it is recommended to clarify the keeping conditions and diet, as adaptation to new foods after capture from the natural environment can be difficult.

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 Blue-Eyed Panaque get?

An adult reaches 28 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Blue-Eyed Panaque need?

The recommended volume is 250 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Blue-Eyed Panaque need?

Temperature 20–24 °C, pH 6.2–7.5, hardness 2–18 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Blue-Eyed Panaque live?

Around 12 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Blue-Eyed Panaque aggressive?

Temperament: semi-peaceful (aggression when space is limited). Keep this in mind when choosing tank mates.

How many Blue-Eyed Panaque should be kept together?

Recommended setup: solitary. Ignoring this is a common cause of stress and disease.

What does Blue-Eyed Panaque eat?

Diet type: plant-based (algae, vegetables). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Blue-Eyed Panaque?

The scientific name of the species is Panaque suttonorum, family Armored Catfishes (Loricariidae). It also appears in the literature as: Panaque suttoni.

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Other scientific names and conservation status

Other scientific names
Panaque suttoni
Categories
Catfish, Cold-water
Conservation status
Data deficientDD