Liberty molly

Poecilia salvatoris

Also known as Salvador molly, El Salvador molly

FreshwaterBrackishFish

Care at a glance

Temperature
72–82°F
22–28°C
pH
7.5–8.5
Adult size
3.9 in
10 cm
Minimum tank
24 gal
90 L
Temperament
Mostly peaceful
Social behavior
Social
Swim level
Middle
Difficulty
Medium
Breeding
Easy
Rarity
Rare
Family
Poeciliidae
Origin
Native to Pacific slope coastal streams and lagoons of El Salvador and Guatemala, in fresh to slightly brackish water.

Overview

Keep in 90 liters or larger at 22 to 28 C, pH 7.5 to 8.5, in hard water, with a little marine salt tolerated but not required. Feed a vegetable heavy diet of spirulina flake, algae, and blanched greens with some frozen foods. Males are aggressive to each other, so keep one male with several females, or use a big tank with room for a few males and many females. A good hard water molly for keepers who want wild color rather than fancy strains.

In the wild

A short finned molly whose males flash red, blue, and white in the fins, colors that earned the liberty name. It comes from warm coastal Central American streams and tolerates a little salt. Keep a group in a hard water tank with plants, algae, and open swimming space. Warm, hard, clean water brings out the best color.

Good to know

Poecilia salvatoris is a true molly, closely related to the shortfin molly, reaching about 10 cm. Males display intense red, blue, and white fin markings and spar with each other for status. Like other mollies it grazes heavily on algae and benefits from a vegetable rich diet.

Did you know

The red, white, and blue in a displaying male's fins are what give the liberty molly its patriotic sounding name.

Weekly picks

Tank mates

Liberty molly is a mostly peaceful, social species that keeps to the middle. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Check the full mix in the stocking calculator

Common questions

What size tank does a Liberty molly need?

A Liberty molly needs at least 24 gal (90 L). It spends most of its time in the middle.

What temperature and pH does a Liberty molly need?

A Liberty molly is comfortable at 72–82°F (22–28°C) with a pH of 7.5–8.5.

How big does a Liberty molly get?

An adult Liberty molly reaches about 3.9 in (10 cm).

Related species