Red Tail Boesemani Rainbowfish

A deeper red-tail form of the classic Boesemani Rainbowfish, selected for stronger warm coloration and active display value.

The Red Tail Boesemani Rainbowfish is a beautiful form of Melanotaenia boesemani, known for the iconic two-tone rainbowfish appearance: a cooler blue to bluish-grey front half and a warm orange-red rear half.

Compared with the more common yellow-tail Boesemani often seen in the hobby, this form is selected for a deeper red to orange-red tail and rear body coloration. Mature males show the strongest color, especially when kept in a proper group with stable water and good diet.

Why this fish stands out

• Deeper red-tail coloration compared with common yellow-tail Boesemani
• Classic blue-front and warm red-orange rear body contrast
• Active schooling fish with excellent display movement
• Peaceful and suitable for many medium community aquariums
• Great centerpiece group for planted or natural-style tanks

Best for

• Medium to large community aquariums
• Rainbowfish collectors
• Planted display tanks
• Aquarists looking for active, colorful schooling fish
• Customers who want a more premium Boesemani form

Topick Aquarium Insight

Boesemani Rainbowfish are often sold when young, before their full color develops. Juveniles and females may look much less intense at first, while mature males develop the strongest contrast and tail coloration over time.

For best results, keep them in a group, feed a varied diet, and give them time. Stable water, proper schooling density, and maturity are what turn this fish from “nice” into a true display fish.

Behavior & Group Size

Red Tail Boesemani Rainbowfish are active, peaceful schooling fish. They should be kept in a group whenever possible. We recommend at least 5–6 fish, with larger groups producing better color, confidence, and natural behavior.

You may see males chase or display toward each other, but this is usually normal rainbowfish behavior and rarely causes real damage in a properly sized aquarium.

Tank Setup

These fish appreciate open swimming space with planted edges or background cover.

• Minimum recommended tank: 40 gallons for a small group
• Longer tanks are preferred for swimming space
• Planted edges with open middle swimming area
• Stable filtration and good oxygenation
• Darker background/substrate helps enhance coloration

Because they are active swimmers, tank length and open space matter more than heavy decoration.

Water Parameters

• Scientific Name: Melanotaenia boesemani
• Common Name: Red Tail Boesemani Rainbowfish
• Temperature: 24–28°C
• pH: 6.8–8.0
• Adult Size: approximately 10–12 cm
• Temperament: Peaceful / active
• Diet: Omnivore
• Care Level: Easy to Intermediate

Boesemani Rainbowfish are adaptable when properly acclimated. Stable temperature and clean, oxygen-rich water are more important than chasing exact numbers.

Feeding

A varied diet helps develop stronger body condition and color.

• High-quality flakes
• Small to medium pellets
• Frozen bloodworms
• Frozen brine shrimp
• Daphnia and other small frozen foods

Feed moderately and consistently. Color development improves with maturity, group confidence, and good nutrition.

Tank Mates

Red Tail Boesemani Rainbowfish work well with many peaceful medium-sized community fish.

• Other rainbowfish
• Medium tetras
• Barbs and rasboras of suitable size
• Corydoras
• Peaceful plecos
• Angelfish in properly sized tanks

Avoid very tiny nano fish, small shrimp, or slow timid species that may be stressed by their activity level.

Important Note

This listing is for the red-tail / deeper red form of Boesemani Rainbowfish. Young fish may not show full adult coloration immediately. Color improves with maturity, stable care, group behavior, and proper diet.

FAQ

Is this different from regular Boesemani Rainbowfish?
It is the same species, Melanotaenia boesemani, but selected or sold for stronger red to orange-red tail and rear-body coloration compared with common yellow-tail forms.

Will juveniles show red color right away?
Not always. Boesemani Rainbowfish often develop stronger color as they mature, especially males.

How many should I keep?
We recommend at least 5–6 fish. Larger groups show better confidence, movement, and color.

Are they aggressive?
They are active but generally peaceful. Male display and chasing are normal, but they usually do not cause serious damage in a proper setup.

Do they need a heater?
Yes. We strongly recommend a heater to maintain stable tropical temperatures and reduce stress.