Do Black Mollies need salt in the water?

Black Mollies do not require salt but they tolerate brackish conditions. In freshwater, ensure the water is moderately hard and alkaline (pH 7.0–8.5, 15–30 dGH). Soft, acidic water can cause health issues.

Will the pack include males and females?

Yes, the pack includes a random mix of males and females. Males have a pointed anal fin (gonopodium) while females are rounder. Expect breeding activity once settled in your tank.

Do Black Mollies eat algae?

Yes, Black Mollies are active algae grazers. They will nibble on green algae throughout the day, making them a useful part of your tank’s cleaning crew alongside regular maintenance.

Poecilia sphenops

5x Black Molly Mix – Poecilia Sphenops

Name: 5x Black Molly Mix – Poecilia Sphenops
Brand: Tropical Fish Co
SKU: 6755
Price: 1.99 GBP
Availability: PreOrder

Beginner Friendly

Peaceful

£1.99 – £3.99In Stock

Size

Pack of 5 Black Mollies (Poecilia sphenops) – striking jet-black livebearers that add bold contrast to any community aquarium. Mixed gender selection. Hardy, beginner-friendly fish.

Beginner FishBlack MollyCommunity FishLivebearerPoecilia Sphenopssite:tropical-fish-co

Care at a Glance

Scientific Name

Poecilia sphenops

Adult Size

8 cm

Lifespan

4 years

Care Level

Easy

Temperament

Peaceful

Temperature

24–28°C

pH Range

7–8.5

Hardness

15–30 dGH

Minimum Tank

75L

Diet

Flakes, algae wafers, blanched vegetables, frozen foods

Molly (Poecilia sphenops) in a planted aquarium

Full Care Guide

Molly Care Guide: Poecilia sphenops for UK Aquarists

Buy X Gold Leopard Sailfin Molly, a hardy Poecilia latipinna with bold colour and flowing fins. Ideal for community tanks. UK delivery available.

24 min readRead guide

Water Parameters

Maintain these water conditions for optimal health and vibrant colors

Temperature

24–28°C

24°CIdeal Range28°C

pH Level

7–8.5

7Ideal Range8.5

Water Hardness

15–30 dGH

15 dGHIdeal Range30 dGH

This pack of 5 Black Mollies (Poecilia sphenops) gives you a ready-made group of these classic community fish. The Black Molly is one of the most recognisable and popular tropical fish varieties, prized for its deep velvet-black colouration that provides a striking contrast against green plants and lighter tank mates.

Care at a Glance

Scientific Name	Poecilia sphenops
Adult Size	6–8 cm
Temperature	24–28 °C
pH Range	7.0–8.5
Hardness	15–30 dGH
Minimum Tank	75 litres
Diet	Flakes, algae wafers, blanched vegetables, frozen foods
Temperament	Peaceful
Lifespan	3–5 years
Care Level	Easy

Why Black Mollies?

Black Mollies are among the hardiest tropical fish available. They tolerate a wide range of water conditions, accept virtually any food, and breed readily. Their uniform black colouration makes them a bold centrepiece in planted tanks and they help control algae by grazing on it throughout the day.

Diet & Feeding

Omnivorous with a preference for vegetable matter. Feed quality flakes, algae wafers, blanched courgette or spinach, and occasional frozen foods. Their algae-grazing habit makes them a natural part of your tank’s cleaning crew.

Tank Mates

Peaceful community fish. Compatible with platies, swordtails, guppies, corydoras, and tetras. Explore our livebearer range including Berlin Platy, Dalmatian Sailfin Mollies, and Blue Wagtail Platies.

Why Buy from Tropical Fish Co?

All fish are carefully packed and shipped with live arrival guarantee. Order today for fast UK delivery.

Licensed Courier

Moved by UK carriers licensed to handle live animals

Trained Packing

Hand-packed with oxygen bags, poly box, heat pack

Live Arrival Guarantee

Replacement or refund — just tell us the same day

Pay Later Available

Klarna & PayPal Pay in 3 at checkout

How your fish gets to you

Dispatched Tuesday, delivered Wednesday — every order tracked and insured.

Dispatched on Tuesdays by a UK courier legally licensed to carry live animals. You’ll get a tracking number on dispatch morning and live updates through the afternoon.
Hand-packed in an insulated poly box with oxygen bags and (Oct–Apr) 40-hour heat packs. £20 flat rate covers any number of fish.
Covered by our Live Arrival Guarantee. Tell us the same day your fish arrive with a short unboxing video — replacement or refund, no arguments. Why we need a video
You need to be home.Live fish cannot be left on doorsteps or with neighbours — it kills them. Please only order for days when someone will be in to sign.

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