ROSIE RED MINNOWS

Rosie Red Minnows—also known as Pimephales promelas—are a hardy, peaceful freshwater species that are often underestimated. While they’re commonly sold as feeder fish, they actually make fantastic pets and even pond companions. Here’s a full profile to help you get to know them better:

Appearance & Size

• Color: Pale pink to orange-red, thanks to a genetic variation of the Fathead Minnow
• Size: Typically 2–3 inches long
• Lifespan: 2–4 years with proper care

Habitat & Tank Setup

• Tank Size: Minimum 10 gallons for a small group
• Water Temp: 50–78°F (10–25°C)—they’re incredibly temperature-tolerant!
• pH Range: 6.0–8.0
• Decor: Provide caves or overhangs—males love to claim and guard them during breeding

Diet

• Type: Omnivorous
• Food: Flake food, micro pellets, algae wafers, and live/frozen treats like daphnia or brine shrimp

Behavior & Compatibility

• Temperament: Peaceful and active
• Tank Mates: Great with other small, non-aggressive fish or goldfish in cooler setups
• Pond Friendly: Yes! They’re cold-hardy and can overwinter in outdoor ponds

Breeding

• Spawning: Males guard eggs laid on the underside of rocks or decorations
• Fry Care: Easy to breed, but adults may eat the fry if not separated

These little swimmers are low-maintenance, adaptable, and full of personality—a great choice for beginners or anyone looking to add life to a community tank or pond.