Question 1

How much do mollies cost in the UK?

Accepted Answer

Standard gold and silver mollies start at about £3, most named forms sit under £10, and premium platinum or sailfin fish — sold singly or as pairs — run up to £20-£60. The listings below are live stock, so what you see is what's currently swimming.

Question 2

Do mollies need salt in their water?

Accepted Answer

No — that's an old myth. Mollies thrive in clean, hard, alkaline freshwater (pH 7-8.5, 10-25 dGH), which is exactly what most UK taps deliver. They can tolerate brackish conditions, but they don't require them, and salt just limits your choice of tank mates.

Question 3

How big do mollies get?

Accepted Answer

Shortfin sphenops mollies stay around 6-8 cm, but sailfin latipinna and velifera females can reach 12 cm with a dorsal fin to match. That's why we suggest 90 litres or more for sailfins — a big male displaying at full sail is worth the space.

Question 4

What do mollies eat?

Accepted Answer

They're omnivores that lean herbivore: spirulina flake or algae-based pellets as the staple, blanched vegetables like courgette weekly, plus frozen daphnia or brine shrimp as treats. You'll also see them rasping algae off glass and wood all day — that grazing is normal and healthy.

Question 5

Are balloon mollies harder to keep?

Accepted Answer

Slightly. The balloon shape comes from a bred-in shortened spine, which compresses the internal organs — so balloon forms are less tolerant of poor water and sudden temperature swings than standard mollies. Keep the water pristine and stable and they do fine; care is otherwise identical.

Question 6

Can mollies live with guppies and platies?

Accepted Answer

Yes — all three are peaceful hard-water livebearers that want the same conditions, and together they make the classic colourful community. Just size the tank for the mollies: 90 litres covers sailfins comfortably, and all three species will breed enthusiastically in a mixed-sex setup.

Question 7

How do mollies breed?

Accepted Answer

Mollies are livebearers in the family Poeciliidae: fertilisation is internal and the female gives birth to free-swimming fry rather than laying eggs, after a gestation of roughly four to six weeks. Broods are large and the fry are big enough to take crushed flake and baby brine shrimp straightaway. In a mixed-sex group breeding is continuous, so dense planting or a separate grow-out tank helps fry survive the adults.

Molly Fish for Sale UK

Silver Sailfin Molly (Poecilia velifera)

Green Sail-Fin Molly Pair (Poecilia velifera)

Gold Sailfin Molly (Poecilia velifera) - Pack of 3

Gold Molly (Poecilia sphenops)

Assorted Balloon Molly (Poecilia cf. latipinna)

Black Balloon Molly (Poecilia latipinna)

Gold Leopard Sailfin Molly Mix (Poecilia latipinna)

Marble Sailfin Molly (Poecilia velifera)

Molly Lyra Mixed (Poecilia sphenops Lyra Mix)

Black Molly (Poecilia sphenops black molly)

Lyra Molly Black (Poecilia sphenops lyra molly)

Sailfin silver molly (Poecilia latipinna silver molly)

Poecilia latipinna ballon molly mix lyra

Gold Molly Lyra (Poecilia sphenops gold molly l.f.)

Poecilia latipinna silver marble

Sail-Fin Molly assorted lyra (Poecilia velifera assorted lyra)

Sail-Fin Molly assorted (Poecilia velifera assorted)

Poecilia salvatoris

Poecilia latipinna ballon molly silver

Poecilia latipinna black molly

Gold Black Molly (Poecilia sphenops gold black molly)

Poecilia latipinna balloon calico marble golden molly

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