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Cutthroat Trout Aquarium Care Guide

Oncorhynchus lewisi

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Keeping Cutthroat Trout in an aquarium requires the right conditions.

Aquarium Information

  • Care level: expert
  • Temperament: semi-aggressive
  • Diet: carnivore
  • Minimum tank size: 500_gallons
  • Compatibility: Generally not suitable for home aquaria due to size, specific environmental needs, and predatory nature. If kept, only with other large, cold-water fish of similar temperament and size.
  • Special requirements: Requires very large, well-oxygenated tanks with strong filtration and consistent cold water temperatures. Mimicking natural stream or river environments with strong currents, hiding places, and appropriate substrate is crucial. Not recommended for typical aquarists.

Water parameters

Temperature
45-60°F (7-16°C)
pH level
6.5-8.0
Hardness
5-15 dGH

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