Paradise Fish/Paradise Gourami
Macropodus opercularis
Basic Information
The Paradise Fish (Macropodus opercularis), also known as the paradise gourami, is a striking freshwater fish native to eastern Asia, including China, Taiwan, Vietnam, and Korea. Renowned for being one of the earliest tropical fish introduced to Western fishkeepers, they feature vibrant alternating vertical stripes of bright blue and orange-red, set off by an iridescent sheen and elegant, elongated finnage. Adults typically reach a length of 3 to 4 inches (7.5 to 10 cm).
They are semi-aggressive to aggressive labyrinth fish, possessing a specialized organ that allows them to breathe atmospheric air directly from the surface. Because of their territorial nature—especially among males—they do not school and should not be kept in large groups of their own species. Males are particularly territorial toward one another, though a single male can be kept with a harem of females in a spacious tank, or kept as a solitary centerpiece fish in a community aquarium. An interesting historical fact is that their extreme hardiness enabled them to survive long sea voyages to Europe in the 19th century long before modern aquarium heating and filtration technology existed.
Lifespan
With proper care, diet, and water quality, Paradise Fish typically live 6 to 8 years in captivity, though some robust individuals can live even longer.
Sexing
Sexing Paradise Fish is relatively straightforward once they reach maturity. Males are significantly more colorful, displaying intense blues and fiery reds, and feature dramatically longer, pointed dorsal, anal, and caudal fins. Females are noticeably paler, smaller, and have shorter, rounded fins, as well as a rounder belly when carrying eggs.
Tank Set Up
The minimum recommended tank size for a single adult Paradise Fish or a pair/trio is 20 to 30 gallons. The aquarium should be densely planted with live or silk plants, driftwoods, and caves to provide hiding spots and break line of sight, which minimizes aggressive tendencies. Floating plants such as Duckweed or Frogbit are highly recommended, as they offer shade and mimic their natural slow-moving or stagnant marshland habitats. Ensure the tank has a secure lid, as these fish are skilled jumpers and need warm, humid air above the surface for their labyrinth organ.
Tank Mates
Paradise Fish exhibit semi-aggressive to aggressive temperaments, particularly toward other labyrinth fish, long-finned species, or fish of similar color and size. Ideal tank mates include fast-moving, peaceful community species that inhabit middle-to-bottom water levels, such as larger tetras, danios, rasboras, bristlenose plecos, and Corydoras catfish. Avoid keeping them with male Betta fish, fancy guppies, gouramis, or aggressive cichlids. Housing two male Paradise Fish together in the same tank will almost certainly lead to severe territorial fighting.
Gravel & Substrate
A dark-colored fine gravel or sandy substrate is ideal for Paradise Fish. Dark substrates enhance their vibrant red and blue coloration and help reduce stress by reflecting less light.
Water Parameters
Type: Freshwater (0 ppt salinity)
Temperature: 61°F – 79°F (16°C – 26°C); they are exceptionally adaptable to cooler room temperatures.
pH: 6.0 – 8.0 (slightly acidic to slightly alkaline)
Other considerations: Prefers gentle to slow-moving water currents and low-to-moderate filtration to prevent turbulence from disturbing floating plant cover or nest building.
Food
Paradise Fish are omnivorous predators in the wild, feeding on small insects, larvae, and crustaceans. In captivity, they thrive on a varied diet consisting of high-quality protein-rich flakes or micro-pellets supplemented regularly with live or frozen foods such as bloodworms, brine shrimp, daphnia, and tubifex. They will also occasionally snack on small pest snails.
Paradise Fish make fantastic pets due to their dazzling coloration, high intelligence, dynamic personality, and extreme hardiness. Their ability to tolerate a wide range of temperatures and water conditions makes them ideal for both beginners and experienced aquarists looking for a centerpiece fish with character.
Where can I find a Fish store with paradise fish near me?
If you're located in Montgomery County, Maryland, it's just a short drive to Critters, Reptiles & Exotics in Frederick, where you can check availability of paradise fish and get expert advice on tank setup, water quality, and feeding schedules. Whether you're new to freshwater fish or are expanding your collection, there’s always a new adventure waiting at Critters, Reptiles & Exotics!