Hoplo Catfish

Introduction

The Hoplo Catfish is a hardy and peaceful bottom-dwelling fish known for its unique appearance and active scavenging behavior. It is an excellent addition to community aquariums, where it helps keep the tank clean by consuming leftover food and debris. This species is highly adaptable and thrives in a wide range of water conditions, making it a great choice for both beginner and experienced aquarists.

Scientific Name

Megalechis thoracata

Common Name

• Hoplo Catfish

• Marbled Hoplo Catfish

• Armored Catfish

Water Quality and Temperature

• Temperature: 72°F – 82°F (22°C – 28°C)

• pH Level: 6.0 – 8.0

• Hardness: 2 – 20 dGH

• Water Type: Freshwater

• Filtration & Flow: Moderate to strong, as they prefer well-oxygenated water

Feeding

Hoplo Catfish are omnivores and will eat a variety of foods.

• Preferred Diet:

  • Sinking Pellets and wafers

  • Frozen or live foods (bloodworms, brine shrimp, blackworms)

  • Vegetable-based foods (blanched zucchini, cucumber, and spirulina-based pellets)

• Feeding Frequency: 1-2 times per day

Tank Mates

Hoplo Catfish are peaceful and social fish that do well in a community tank.

• Compatible Tank Mates:

  • Barbs

  • Angelfish

  • Other peaceful catfish

  • Tetras

  • Corydoras

  • Gouramis

• Avoid Aggressive Fish:

  • Large cichlids

  • Aggressive predators

Substrates and Tank Decorations

• Substrate:

  • Sand or fine gravel (soft to avoid injury to their barbels)

• Decorations:

  • Driftwood, caves for hiding spots

  • Smooth rocks and plants

Suitable Plants

Hoplo Catfish appreciate a well-planted tank for cover. Some good choices include:

• Java Fern
• Hornwort
• Anubias
• Amazon Swords

Sexing

• Males: Have thicker, more muscular pectoral fins with brighter coloration

• Females: Are larger and rounder, especially when carrying eggs

Breeding

Hoplo Catfish are bubble nest builders, meaning the male constructs a floating nest for the eggs.

• Breeding Conditions:

  • Warm water (78°F – 82°F)

  • Floating plants or a breeding tank

• Spawning Process:

  • The male builds a bubble nest

  • The female lays eggs, which the male fertilizes and guards

  • Eggs hatch in 2–4 days

• Fry Care:

  • Feed newly hatched fry infusoria or finely crushed flakes

Maximum Size and Longevity

• Size: Up to 6 inches (15 cm)

• Lifespan: 5 to 8 years with proper care

General Information

Hoplo Catfish are hardy and adaptable, making them ideal for various tank setups. They are active bottom dwellers that spend their time searching for food, occasionally darting to the surface for air due to their ability to breathe atmospheric oxygen.

A Fun Fact

Hoplo Catfish can produce croaking or grunting sounds by rubbing their pectoral fins against their body, which they use for communication and during courtship displays!