Liberty Molly

Poecilia salvatoris

Liberty Molly is a middle-to-top swimmer. Keep in a loose group of 4+.

Semi-AggressiveMiddle to top swimmerKeep in a loose group of 4+Beginner – Intermediate

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Need help with Liberty Molly?

Explore compatibility, care or problems using this guide and your aquarium’s conditions.

Quick facts

Adult size: ≤ 3.9" (≤ 10 cm)
Aquarium size: 53 US gal (200 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
Care level: Beginner – Intermediate
Temperament: Semi-Aggressive
Swimming zone: Middle to top swimmer
Temperature: 77–79°F (25–26°C)
pH: 7–7.8
GH: 10–15 dGH
Diet: Omnivore
Lifespan: up to 5 years
Group behavior: Keep in a loose group of 4+

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 5 years.

Aquarium size and space needs

Minimum aquarium size: 53 US gal (200 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 25–26 °C, pH 7–7.8, GH 10–15 dGH.

Temperament and compatibility

Liberty Molly needs careful companion choice because it can be territorial or semi-aggressive.

Swimming zone and behavior

This fish uses the middle to upper part of the aquarium, so leave enough open swimming space for movement and feeding.

Feeding

As an omnivore, Liberty Molly should receive a varied diet rather than one repeated food type.

Before adding this fish

Plan for an aquarium of 53 US gal (200 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length.
Make room for its social group.
Choose other fish carefully around this temperament.
Keep in a loose group of 4+.
Offer a varied diet suited to this species’ documented feeding habits.

Natural habitat and origin

Origin: El Salvador.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Blue Eyed Congo Tetra Phenacogrammus aurantiacus Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 3.9" (≤ 10 cm) 72–79°F (22–26°C) African Glass Catfish Pareutropius debauwi Similar care level Bottom dweller Similar diet Intermediate – Advanced ≤ 3.9" (≤ 10 cm) 72–81°F (22–27°C) Argentine Humphead Gymnogeophagus balzanii Similar care level Same temperament Bottom dweller Intermediate ≤ 7.9" (≤ 20 cm) 70–77°F (21–25°C) Blue Spotted Hill Trout Barilius bakeri Similar care level Same temperament Same swimming zone Intermediate – Advanced ≤ 5.1" (≤ 13 cm) 64–79°F (18–26°C) African Red Eyed Tetra Arnoldichthys spilopterus Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 3.9" (≤ 10 cm) 75–81°F (24–27°C) Anus Spot Lampeye Killifish Poropanchax stigmatopygus Same family Similar care level Same swimming zone Intermediate ≤ 0.9" (≤ 2.4 cm) 72–79°F (22–26°C)

FAQ

How large does Liberty Molly get?

Liberty Molly reaches ≤ 3.9" (≤ 10 cm).

What aquarium size does Liberty Molly need?

Use an aquarium of at least 53 US gal (200 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length.

Is Liberty Molly peaceful?

Liberty Molly needs more careful companion choice because the temperament data points toward boundaries, space, or similar-sized fish.

What temperature is suitable for Liberty Molly?

Keep it between 25 to 26 °C.

Should Liberty Molly be kept alone or in a group?

Liberty Molly: Keep in a loose group of 4+.