Hoplisoma Araguaiaensis – Rare Corydoras-Type Catfish

Hoplisoma araguaiaensis is a fascinating and rare Corydoras-type catfish native to the Araguaia River basin in Brazil. Known for its peaceful temperament, small size, and active bottom-dwelling behavior, this species is highly prized among aquarists who maintain planted aquariums, nano setups, or community tanks.

Hoplisoma araguaiaensis features a subtle body coloration with muted brown to grey tones and delicate fin markings. Its attractive yet understated appearance blends naturally with driftwood, moss, and leaf litter, making it a charming addition to aquascapes that aim for a natural look.

As a social species, Hoplisoma araguaiaensis thrives in groups of 5–8 or more. When kept in proper numbers, these fish display natural schooling behavior and are constantly active, exploring the bottom substrate in search of food. Their sensitive barbels help them detect edible particles while preventing damage to delicate plants and décor.

Key Features

• Rare Hoplisoma-type Corydoras from the Araguaia River

• Small and peaceful bottom-dweller

• Subtle brown-grey coloration with delicate fin markings

• Active and social, perfect for schooling

• Ideal for planted aquariums, nano tanks, and community setups

• Compatible with shrimp and small peaceful fish

• Beginner-friendly with proper care

Size

• Adult size: 4 – 5 cm

• Juveniles: 2 – 3 cm when sold

• Females tend to be slightly larger and rounder than males

Temperament

Hoplisoma araguaiaensis is calm and non-aggressive.

• Completely peaceful with other community fish

• Best kept in groups of at least 5–8

• Social and constantly exploring the tank bottom

• Compatible with small, gentle fish and invertebrates

Water Conditions

Stable freshwater conditions are essential for optimal health.

• Temperature: 22 – 26°C (72 – 79°F)

• pH: 6.0 – 7.5

• GH: 4 – 12 dGH

• Ammonia/Nitrite: 0 ppm

• Nitrate: < 20 ppm

Weekly 20–30% water changes maintain water quality.

Tank Setup

Hoplisoma araguaiaensis thrives in planted aquariums with soft substrate.

• Fine sand substrate to protect barbels

• Live plants and moss for cover and grazing

• Driftwood, rocks, and small caves for hiding

• Leaf litter for natural habitat

• Gentle filtration and proper oxygenation

Minimum recommended tank size: 60 liters (~15 gallons) for a small group to allow natural schooling.

Feeding Habits

This species is an omnivorous bottom feeder.

• Sinking micro pellets and catfish pellets

• Frozen foods (bloodworms, brine shrimp, daphnia)

• Live micro foods

• Crushed flakes or fine particles

Feed small portions once or twice daily. Dedicated feeding ensures proper growth and nutrition.

Tank Mates

Ideal for peaceful community tanks.

Suitable tank mates:

• Chili rasboras

• Ember tetras

• Celestial pearl danios

• Small livebearers

• Shrimp and snails

Tank mates to avoid:

• Large aggressive fish

• Cichlids

• Predatory species

Care and Maintenance

• Keep in groups of 5–8 or more for social interaction

• Provide soft sand substrate

• Maintain stable water parameters

• Perform regular water changes

• Feed small high-quality foods

• Include ample hiding places

Healthy Hoplisoma araguaiaensis are active, social, and continuously explore the substrate.

Why Choose Hoplisoma Araguaiaensis?

• Rare Corydoras-type species with subtle coloration

• Peaceful and schooling behavior enhances aquarium activity

• Active bottom-dweller safe for nano and community tanks

• Perfect for planted aquascapes

• Small size ideal for compact aquariums

Hoplisoma araguaiaensis is a charming and rare addition to planted and community aquariums. Its peaceful nature, subtle markings, and active bottom-dwelling behavior make it ideal for aquarists seeking a small, social, and visually appealing Corydoras-type fish. 🐟🌿