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GoldfishVSCory Catfish

Can they live together? Complete Compatibility Analysis

Compatibility Score
30
🚫 Do Not Mix

Goldfish are coldwater fish that produce a high bioload and prefer cooler temperatures. Cory Catfish are tropical, peaceful bottom-dwellers that require warmer, stable temperatures. Their core environmental needs are incompatible.

Potential Issues
  • •Goldfish require cooler water (60-74°F), while Cory Catfish require tropical temperatures (72-79°F). Keeping them together will stress one or both species, leading to illness and death.
  • •Goldfish are messy and produce significant waste, which can degrade water quality and harm the more sensitive Cory Catfish.
  • •Goldfish may outcompete Cory Catfish for food and can grow large enough to accidentally ingest smaller Corys.
Tank Requirements
Temperature
Incompatible. Goldfish: 60-74°F. Cory Catfish: 72-79°F.
pH Level
Moderately compatible. Both prefer neutral to slightly alkaline water (6.5-7.8).
Minimum Tank Size
Not applicable for a mixed tank. For species-specific setups: 30+ gallons for fancy goldfish, 20+ gallons for a Cory school.

About Goldfish and Cory Catfish

When considering adding Cory Catfish to a tank with Goldfish, it's crucial to understand their specific needs. Goldfish are coldwater fish that produce a high bioload and prefer cooler temperatures. Cory Catfish are tropical, peaceful bottom-dwellers that require warmer, stable temperatures. Their core environmental needs are incompatible.

Key Differences in Care Requirements

Goldfish Needs

  • Tank Size: 20 gallons (76 liters) minimum
  • Water Type: coldwater
  • Scientific Name: Carassius auratus

Cory Catfish Needs

  • Tank Size: 10 gallons (38 liters) minimum
  • Water Type: tropical
  • Scientific Name: Corydoras

TankMate AI Verdict

According to our TankMate AI analysis, understanding the temperament and environmental needs of both Goldfish and Cory Catfish is key to a successful community tank. Always monitor your fish for signs of stress or aggression, especially when introducing new tank mates.

* Disclaimer: Compatibility is based on typical species behavior. Individual fish personalities may vary. Always monitor new tank mates closely.

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