Tank setup
Size the aquarium to Molly's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Poecilia sphenops
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What to know before you buy.
Mollies are a popular livebearer known for their versatility and wide range of colors, including the famous all-black variety. They are adaptable fish that appreciate slightly harder, alkaline water and will graze on algae in the tank. They are active and peaceful, making them great for community setups.
Key traits
Select a tank to see how this species fits.
Everything you need to keep Molly healthy in a South African setup.
Size the aquarium to Molly's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Keep pH 7.5–8.5 and 23–28°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Molly is an omnivore. Feed a varied diet appropriate for freshwater fish — quality flakes, pellets, or frozen foods sized to the mouth.
Molly is generally peaceful. Observe during feeding and at lights-out for true temperament.
Pair with similarly sized peaceful tankmates in freshwater fish. Avoid fin-nippers or species that outgrow this fish.
Breeding notes for Molly vary by line and water chemistry — ask your local shop about proven pairs in SA.
From hobbyists across SA.

Price trends and buyer demand — data only FishHub tracks.
SA price range this month: R20–699 · Average: R109
This data is unique to FishHub
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Species that typically work alongside Molly in a similar setup.

Balloon Molly
Poecilia sphenops (deformed variety)

Guppy
Poecilia reticulata

Koi
Cyprinus rubrofuscus

Lionhead Goldfish
Carassius auratus

Oranda
Carassius auratus

Veiltail Goldfish
Carassius auratus

Shubunkin
Carassius auratus

Jikin Goldfish
Carassius auratus