Rainbow Shark (Epalzeorhynchos frenatum)By Christopher / February 15, 2025 Size: 6 inches Tank Size: Minimum 55 gallons Temperament: Semi-aggressive Water Parameters: 72–79°F, pH 6.5–7.5 Diet: Omnivore (Algae, pellets, vegetables) Care Notes: Best kept alone or with fast-moving tankmates.