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Rosy Red Minnow
Pimephales promelas
📍 North America
The Rosy Red Minnow is a selectively bred color variant of the Fathead Minnow, displaying a warm pinkish-orange hue that makes it an attractive addition to cool-water community tanks. Hardy and adaptable, they are often sold as feeder fish but make excellent pets in their own right. They are active schooling fish that thrive in groups and are well-suited for beginner aquarists.
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Care Guide
Diet
Rosy Red Minnows are opportunistic omnivores that readily accept high-quality flake food, micro pellets, and sinking wafers. Supplement their diet with frozen or live foods such as daphnia, brine shrimp, and bloodworms to enhance coloration and condition. Feed small amounts two to three times daily, ensuring all food is consumed within a few minutes.
Behavior
Rosy Red Minnows are active, social fish that feel most secure in groups of six or more, displaying natural schooling behavior throughout the middle water column. They are peaceful and rarely show aggression, making them excellent community tank inhabitants with similarly sized, cool-water species. Males may exhibit mild territorial behavior during breeding, but this is generally not disruptive to tankmates.
Breeding
Rosy Red Minnows are relatively easy to breed in captivity, with males developing a distinctive breeding tubercle on their head and darkening in color when ready to spawn. The male will clean a flat surface or the underside of a cave or slate and guard the eggs after the female deposits them. Eggs hatch in approximately four to six days, and the male continues to fan and protect the fry until they are free-swimming.
Tank Mates
Similar size, temperature range, and peaceful temperament make them ideal companions
Active, peaceful schooling fish that share compatible cool-water parameters
Hardy, peaceful, and thrives in similar cool-water conditions
Peaceful bottom dweller that shares cool-water temperature preferences
Peaceful barb that tolerates cooler temperatures and similar water parameters
Peaceful invertebrate that poses no threat and helps clean the tank
Common Diseases
Ich (White Spot Disease)
Small white spots resembling grains of salt on the body and fins, flashing against surfaces, lethargy, and loss of appetite
Raise temperature gradually to 24-26 C if tolerated, treat with ich-specific medication containing malachite green or formalin, and perform regular water changes
Fin Rot
Frayed, ragged, or disintegrating fins, often with a white or reddish edge, accompanied by lethargy
Improve water quality through frequent water changes, treat with antibacterial medication such as kanaplex or erythromycin, and remove any aggressive tankmates
Columnaris (Saddle Back Disease)
White or grayish patches on the body, especially near the dorsal fin, frayed fins, and ulcers on the skin
Treat with antibiotics such as kanamycin or tetracycline, improve water quality, and reduce stress by ensuring proper tank conditions
Velvet (Oodinium)
Fine gold or rust-colored dust on the skin, clamped fins, rapid gill movement, and flashing behavior
Dim tank lighting, treat with copper-based medication or acriflavine, and perform water changes to reduce parasite load
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Quick Facts
- diet
- Omnivore – accepts flake food, pellets, frozen/live foods like daphnia and brine shrimp
- lifespan
- 2-4 years
- max size
- 6.4 cm (2.5 in)
- tank size
- 10 gallons minimum
- temperament
- peaceful
Water it likes
- ph
- 7.0-7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 5-20 dGH
- temperature
- 50–72°F (10–22°C)