Dalmatian Molly

Poecilia sphenops

Animalia›Chordata›Actinopterygii

Variety of Molly · dalmatian

📍 Mexico

A highly recognizable molly variety with a white or silver base body covered in irregular black spots, mimicking the coat of a Dalmatian dog. Hardy and prolific, it is a great beginner livebearer that adapts to a wide range of water conditions and does well in community tanks.

Size3"

Min Tank20g

School3+

peaceful

Zonemid

Care Guide

Diet

Dalmatian Mollies are omnivorous and should be fed high-quality flake food or pellets as a staple, supplemented 2-3 times weekly with frozen foods like brine shrimp, bloodworms, or daphnia. They also benefit from vegetable matter such as blanched spinach or algae wafers. Feed small amounts once daily, only what they can consume in 2-3 minutes.

Behavior

Dalmatian Mollies are peaceful, active swimmers that spend most of their time in the mid-water column, though they occasionally visit the surface and bottom. They are social fish that do best in groups of 3 or more, displaying minimal aggression toward tankmates. Males may chase females frequently, particularly during breeding season, but this rarely causes serious harm.

Breeding

Dalmatian Mollies are prolific livebearers that breed readily in captivity with minimal intervention; females can produce 20-100 fry every 4-6 weeks once mature. Breeding occurs naturally in community tanks with adequate food and stable water conditions (pH 7.0-8.5, 75-82°F). Fry are born fully formed and immediately independent, though many will be consumed by adults unless dense vegetation or a separate breeding tank is provided.

Tank Mates

Guppy

Similar peaceful temperament, identical water parameters, and compatible size make guppies ideal companions

excellent

Platy

Fellow livebearers with matching water requirements and peaceful behavior; can interbreed but produce sterile offspring

excellent

Neon Tetra

Small, peaceful schooling fish that thrive in similar water conditions and add visual interest without aggression

good

Ramshorn Snail

Peaceful algae eaters that help maintain tank cleanliness and occupy no-conflict ecological niches

excellent

Dwarf Gourami

Peaceful labyrinth fish with compatible water parameters; males may occasionally chase but rarely cause injury

good

Common Diseases

Fin Rot

Symptoms

Frayed, discolored, or deteriorating fins; fins may appear shortened or ragged

Treatment

Perform 25-30% water changes every 2-3 days, improve water quality, and treat with aquarium salt (1 teaspoon per 5 gallons) or antibacterial medication if severe

Ich (Ichthyophthirius multifiliis)

Symptoms

Small white spots covering body and fins, rapid breathing, rubbing against objects, lethargy

Treatment

Raise temperature gradually to 82-86°F, treat with aquarium salt or commercial ich medication for 7-10 days, and perform daily water changes

Velvet Disease (Oodinium)

Symptoms

Fine golden or rust-colored dust on body, clamped fins, rapid breathing, lethargy, loss of appetite

Treatment

Increase aeration, treat with copper-based medication or salt therapy, dim lighting to reduce stress, and perform frequent water changes

Constipation

Symptoms

Bloated abdomen, lethargy, loss of appetite, feces trailing from anus

Treatment

Feed blanched peas or increase vegetable content in diet, perform partial water changes, and avoid overfeeding; condition typically resolves within days