Blue Whale Catfish (Cetopsis coecutiens) for Sale in Canada

The Blue Whale Catfish (Cetopsis coecutiens) is a rare and fascinating predatory freshwater catfish from the Amazon Basin. Known for its robust body shape, bluish-grey coloration, and powerful swimming ability, this unusual species is highly sought after by advanced aquarium keepers and collectors of rare monster fish.

Despite its common name, the Blue Whale Catfish is not related to whales. The name comes from its impressive size, smooth body shape, and distinctive blue-grey appearance. This species is a natural predator that feeds on smaller fish and requires a properly planned aquarium setup.

Monster Aquarium Canada proudly offers rare Blue Whale Catfish (Cetopsis coecutiens) with professional live fish shipping throughout Canada.

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Why Choose Blue Whale Catfish?

A Rare Amazon Monster Catfish

Blue Whale Catfish are admired by collectors for their:

Unique Features

• Rare Amazonian freshwater predator
• Blue-grey metallic body coloration
• Powerful streamlined body shape
• Unique hunting behaviour
• Large freshwater catfish appearance
• Fascinating species for advanced aquarists
• Excellent choice for monster fish collections

This species is ideal for hobbyists looking for uncommon predatory freshwater fish.

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Care Requirements

Aquarium Size

Due to their predatory nature and potential size, Blue Whale Catfish require a large aquarium.

Recommended:

• Minimum: 125 gallons for juveniles
• 180+ gallons preferred for adults

Aquarium setup should include:

• Strong filtration system
• Large swimming areas
• Driftwood structures
• Secure aquarium lid
• Stable water conditions

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Water Parameters

• Scientific Name: Cetopsis coecutiens
• Common Name: Blue Whale Catfish, Whale Catfish, Amazon Catfish
• Family: Cetopsidae
• Adult Size: Approximately 10–12 inches (25–30 cm)
• Temperature: 24–28°C (75–82°F)
• pH: 5.5–7.5
• Water Hardness: Soft to Moderately Hard
• Care Level: Intermediate to Advanced
• Temperament: Predatory
• Diet: Carnivore
• Origin: Amazon and Orinoco River Basins, South America

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Feeding Your Blue Whale Catfish

Blue Whale Catfish are carnivorous predators and require a protein-rich diet.

Recommended Foods

• Quality carnivore pellets
• Frozen fish foods
• Shrimp
• Mussels
• Earthworms
• Insects
• Fish-based foods

Avoid feeding only live feeder fish, as this can introduce parasites and nutritional problems.

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Ideal Aquarium Setup

Create a natural Amazon predator environment.

Recommended Features

• Large aquarium footprint
• Dim lighting
• Driftwood
• Rock structures
• Open swimming areas
• Powerful filtration
• Excellent water quality

This species appreciates a secure environment with plenty of swimming space.

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Compatible Tank Mates

Blue Whale Catfish should only be kept with suitable large fish.

Possible tank mates:

• Large Cichlids
• Large Arowana species
• Giant Gouramis
• Large Plecos
• Other monster fish of similar size

Avoid:

• Small community fish
• Shrimp
• Small catfish
• Fish that can fit in its mouth

This species is a predator and may consume smaller tank mates.

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Why Buy Blue Whale Catfish from Monster Aquarium Canada?

Rare Monster Fish Selection

Every Blue Whale Catfish is selected for:

• Healthy body condition
• Strong swimming ability
• Active feeding response
• Quality appearance
• Proper acclimation

Professional Live Fish Shipping Across Canada

Monster Aquarium Canada carefully packages every Blue Whale Catfish using professional live fish shipping methods to help ensure safe arrival throughout Canada.

Canada’s Trusted Aquarium Supplier

Monster Aquarium Canada specializes in rare monster fish, predatory freshwater fish, tropical species, premium aquarium supplies, fish foods, aquatic medications, and accessories for Canadian aquarium enthusiasts.

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Frequently Asked Questions

1. How big does a Blue Whale Catfish grow?

Blue Whale Catfish can reach approximately 10–12 inches (25–30 cm) in captivity with proper care.

2. Is the Blue Whale Catfish aggressive?

It is a predatory species and may eat smaller fish, but it is not typically aggressive toward similarly sized tank mates.

3. What size aquarium does a Blue Whale Catfish need?

A large aquarium of 125 gallons or more is recommended, with larger tanks preferred as the fish grows.

4. What does a Blue Whale Catfish eat?

They eat meaty foods including shrimp, fish-based foods, worms, insects, and carnivore pellets.

5. Does Monster Aquarium Canada ship Blue Whale Catfish?

Yes. Monster Aquarium Canada provides professional live fish shipping across Canada, ensuring your Blue Whale Catfish arrives healthy and ready for its new aquarium.