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FisheasyFreshwater

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.

Size2.5"
Min Tank10g
School6+
peaceful
Zonemiddle

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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.

Common Diseases

Ich (White Spot Disease)

Symptoms

Small white spots resembling grains of salt on the body and fins, flashing against surfaces, lethargy, and loss of appetite

Treatment

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

Symptoms

Frayed, ragged, or disintegrating fins, often with a white or reddish edge, accompanied by lethargy

Treatment

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)

Symptoms

White or grayish patches on the body, especially near the dorsal fin, frayed fins, and ulcers on the skin

Treatment

Treat with antibiotics such as kanamycin or tetracycline, improve water quality, and reduce stress by ensuring proper tank conditions

Velvet (Oodinium)

Symptoms

Fine gold or rust-colored dust on the skin, clamped fins, rapid gill movement, and flashing behavior

Treatment

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)

Stats

Community tips0
Kept by0 hobbyists