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Balloon Molly

Balloon Molly

Origin

Central America

Habitat Size

50-150Liters

Water Type

Brackish

Water Temperature

24º-28ºC

Cost in India

₹80 - ₹150

Size

2 - 6 inches (Small)

Diet

Omnivore

Balloon Molly
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by Happy Pet TeamUpdated on 2 Dec 2025

The Balloon Molly (Poecilia latipinna) is a fascinating and unusual freshwater aquarium fish that will be sure to turn heads with its egg-shaped body and active personality. It has been given a nickname because of its pot-bellied shape, and the Balloon Molly is a selectively bred variety of the Sailfin Molly.

Its rounded back gives it a balloon-like appearance, but the same applies to the breed and not a sign of illness. They are calm, solid, and energetic — thus, the reason they are a fan favorite among community tanks.

Origin of the Balloon Molly

Balloon Mollies are a tank-raised variety of the Sailfin Molly, native to the brackish seas along the Mexican coast and southern US. Their brackish-water relatives are found in fresh and brackish water environments such as lagoons, marshes, and river estuaries. Balloon Mollies tolerate varying levels of salinity and therefore are a robust aquarium fish.

Temperament of the Balloon Molly

Balloon Mollies are peaceful and nice, thriving in a school. They zip about rapidly and spend a good portion of the day zipping by plants and decorations. The males will occasionally harass the females, but a proportionate ratio of 1:2 male-to-female eliminates stress.

They are so laid-back that they're best kept in a community aquarium, especially among other calm groups of fish.

Balloon Molly Compatibility with Other Fish

Balloon Mollies can be kept peacefully with other peaceful, non-fin-nipping freshwater fish species like:

  1. Guppies
  2. Platies
  3. Swordtails
  4. Corydoras catfish
  5. Pearl gouramis
  6. Harlequin rasboras

Avoid keeping them in aquaria with fin-nipping or violent fish like barbs or large cichlids.

Price Range of the Balloon Molly

Balloon Mollies are inexpensive and easily found, and run in the range of ₹100–₹250 ($1–$3) each, depending on variety, coloration, and size. Specialty color varieties like golden or marble Balloon Mollies are a bit pricier.

Characteristics

Temperament

Aggressive

Friendly

Compatibility with other fishes

Not Friendly

Super Friendly

Habitat Size

Small

Large

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Habitat Requirements of the Balloon Molly

Initial Setup Cost

₹4,000 - ₹12,000

Water Temperature

24º -28ºC

Water Type

Brackish

PH Level

7.5 - 8

Tank Set-up

  1. Minimum tank size: 20 gallons (for small schools)
  2. Substrate: Sand or soft gravel
  3. Decor: Grazing rocks and hiding places, and live plants
  4. Lighting: Medium to bright

Water Conditions

  1. Temperature: 24–28°C (75–82°F)
  2. pH: 7.0–8.5
  3. Hardness: 10–25 dGH
  4. Type: Freshwater or very slightly brackish

Environment Needs

Balloon Mollies need clean, well-oxygenated water with little filtration. Add live plants like Anubias, Vallisneria, or Java fern. A little aquarium salt will be health enhancing and introduce coloration, but is optional.

Essential Equipment

Aquarium tank

Water filter

Heater

Light

Substrate

Balloon Molly Dietary Guide

Avg Monthly Expenses

₹80 - ₹ 150

Balloon Mollies are omnivores and need a combination of plant foods and protein foods.

Good foods are:

  1. High-quality flakes or pellets specially formulated for mollies
  2. Blanched spinach, zucchini, or peas
  3. Algae wafers or spirulina foods
  4. Regular protein treats in the form of brine shrimp or bloodworms

Feeding Tips:

  1. Feed them twice a day, small amounts they can consume within 2 minutes. Release the leftovers to prevent water spoilage.
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Balloon Molly Health & Care

Common Health Issues

Fin rot

White spot / ick

Fungus

Columnaris (cotton wool-like growth on the skin)

Ammonia poisoning

Swim bladder inflammation

Signs of good health

Active

Bright coloration

Good apetite

Signs of sickness

Loss of appetite

Lethargic behaviour

Dull coloring

Tattered fins

Swimming abnormally

Balloon Molly Common Problems

Swim Bladder Disease

Balloon Mollies are prone to buoyancy disorders due to the body shape.

  1. Symptoms: Can't swim in a straight line, floats side ways, or sinks.
  2. Treatment: Offer fiber-rich foods like blanched peas and reduce overfeeding. Offer fresh water.

Velvet Disease

Parasitic disease by Oodinium which forms a dusty gold coat.

  1. Symptoms: Golden sheen on body, clamped fins, scraping on surfaces.
  2. Treatment: Utilize the utilization of anti-parasitic copper-rich treatment and minimum lights in treatment.

Columnaris (Cotton Mouth Disease)

Bacterial infection due to poor water quality.

  1. Symptoms: White cotton-like growth on mouth or fins.
  2. Treatment: Treat with antibacterial medicine and enhance tank cleanliness.

Internal Worms

Caused by food parasites or unquarantined fish.

  1. Symptoms: Weight loss in spite of feeding, pale white poop.
  2. Treatment: Deworm with anti-parasitic food or medicine.

Prerequisites for a Fish

Adequate tank space

Cleanliness

Effort & commitment

Enriching Environment

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Written by

Happy Pet Team

Author

Team Happy Pet is a passionate collective of pet experts, enthusiasts, and advocates dedicated to sharing trusted and insightful content.

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Frequently Asked Questions

What water conditions do Balloon Mollies prefer?

They thrive in slightly brackish water with a pH of 7.5-8.5 and temperatures between 24-28°C.

What do Balloon Mollies eat?

They are omnivores and eat a varied diet of plant matter and protein, including flakes, vegetables, and live or frozen foods.

How often to feed Balloon Molly?

Feed them small amounts two to three times a day, ensuring they consume the food within a few minutes.