Dalmatian Molly - Poecilia latipinna

Dalmatian Molly (Poecilia latipinna)

The Dalmatian Molly, Poecilia latipinna, is a bold captive-bred livebearer variety with a pale silver to white body covered in irregular black spotting, giving it the classic Dalmatian pattern. As a form of the Sailfin Molly, males may develop a taller dorsal fin than standard short-fin mollies, while females are usually larger and fuller-bodied. This active, hardy-looking fish is best kept in clean, mineral-rich water with plenty of swimming room, plant cover and peaceful hard-water tank mates.

Common Name:
Dalmatian Molly, Dalmatian Sailfin Molly, Marbled Molly, Spotted Molly, Sailfin Molly.

Scientific Name (Latin):
Poecilia latipinna
Captive-bred Dalmatian colour form.

Maximum Size:
Males can reach around 12–15 cm, especially when well grown, while females are often around 10–12 cm. Many aquarium specimens remain smaller, but they should still be planned for as active medium-sized livebearers.

Water Type:
Freshwater; naturally tolerant of brackish conditions and can be kept in low-end brackish aquariums if acclimated gradually.

Origin / Natural Habitat:
The Dalmatian form is captive-bred and does not occur as a natural wild population. Wild Poecilia latipinna is native to North America, from the Cape Fear drainage in North Carolina through the Gulf Coast region to Veracruz, Mexico. It naturally occurs in still or gently flowing warm waters, including ponds, lakes, sloughs, vegetated backwaters, stream pools, tidal ditches and brackish canals.

Water Parameters:
Temperature: 22–28°C
pH Range: 7.2–8.2
Hardness or Salinity: Moderately hard to hard freshwater preferred; avoid very soft, acidic water. Mollies do best with stable mineral content, a good KH and excellent water quality.

Temperament:
Peaceful but active. Dalmatian Mollies are generally good community fish with other hard-water species, though males may chase females and rival males. Keep either a male-only group in enough space or a mixed group with more females than males to reduce pressure on individual females.

Diet:
Omnivorous with a strong algae and plant-matter requirement. Offer quality livebearer flakes, spirulina flakes, algae-based pellets, small granules, blanched spinach, courgette or peas, plus frozen daphnia, brineshrimp, cyclops and small bloodworm as occasional variety. Do not feed only rich meaty foods, as mollies benefit from regular vegetable content.

Minimum Tank Size:
A minimum of 120 litres is recommended for a small group, with larger aquariums preferred for adult sailfin-type mollies. A longer aquarium with open swimming space is better than a small tall tank.

Behaviour & Activity:
An active upper-to-midwater livebearer that spends much of its time swimming in open areas, browsing algae and plant surfaces, and displaying. Males may raise and spread the dorsal fin when courting or competing. Females give birth to free-swimming fry, and breeding can be frequent if both sexes are kept together. Dense plants and floating cover help fry survive.

Aquarium Category:
Community Fish
Suitable with peaceful hard-water community fish such as platies, swordtails, larger guppies, other mollies, rainbowfish, bristlenose plecos, snails and suitable hard-water tolerant Corydoras or catfish. Avoid soft-water specialists, aggressive cichlids, persistent fin-nippers, large predators and coldwater setups.

Special Requirements or Care Notes:
Dalmatian Mollies need hard, alkaline, well-filtered water and regular maintenance. They often struggle in very soft or acidic aquariums, where they may develop stress symptoms such as clamped fins, shimmying or poor condition. Salt is not always required in suitable hard freshwater, but low-end brackish conditions can be beneficial in some setups if all tank mates are compatible. Avoid overcrowding, sudden temperature drops and unstable water chemistry. Never release mollies into outdoor waterways.

Suitable for:
Beginner to intermediate fishkeepers

Availability:
Common in trade / Captive-bred colour form

All images are a visual representation of the fish you will receive, made to be as accurate as possible. Please note that Mother Nature is a wonderful thing, and variation in patterns and colours will occur — that is part of the unique beauty of these animals.