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Day's Paradise Fish
Pseudosphromenus dayi
📍 South Asia and Southeast Asia (India, Sri Lanka, Myanmar, Malaysia)
Day's Paradise Fish (Pseudosphromenus dayi) is a small, peaceful labyrinth fish native to slow-moving waters of South and Southeast Asia, closely related to the licorice gouramis. It displays attractive reddish-brown coloration with iridescent blue-green highlights and elongated tail filaments, making it a prized species among gourami enthusiasts. Unlike its more aggressive cousin the Paradise Fish, this species is notably shy and gentle, thriving in well-planted, quiet aquariums.
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Care Guide
Diet
Day's Paradise Fish is an omnivore that strongly prefers small live or frozen foods such as daphnia, micro worms, baby brine shrimp, and bloodworms. High-quality micro pellets and crushed flake foods can supplement the diet but should not be the sole food source. Feed small amounts 1-2 times daily to maintain health and encourage natural foraging behavior.
Behavior
This species is shy and retiring, spending much of its time among dense vegetation and leaf litter near the middle of the water column. Males may display mild territorial behavior toward one another, especially during breeding, but are generally non-aggressive toward other species. It is best kept in pairs or small groups in a quiet, well-planted aquarium away from boisterous tankmates.
Breeding
Day's Paradise Fish is a bubblenest builder; the male constructs a small nest among floating plants or under broad leaves and guards the eggs after spawning. Breeding is triggered by slightly warmer, softer, and more acidic water along with an abundance of live foods. The male guards the nest aggressively during this period, and fry are tiny and require infusoria or commercial fry foods as first foods.
Tank Mates
Similar size, temperament, and water parameter requirements; both are shy labyrinth fish that coexist peacefully
Tiny, peaceful, and shares soft acidic water preferences; will not compete or stress Day's Paradise Fish
Peaceful bottom dweller that occupies a different zone; compatible water parameters and non-threatening behavior
Small, peaceful bottom dweller that will not disturb this shy species; compatible soft water conditions
Tiny, peaceful schooling fish that prefers soft acidic water; adds activity without stressing the gouramis
Similarly peaceful and small; compatible water parameters though tank should be spacious enough to avoid competition
Common Diseases
Velvet (Oodinium)
Gold or rust-colored dust on skin, clamped fins, flashing against objects, lethargy, rapid gill movement
Raise temperature slightly, dim lighting, treat with copper-based medication or formalin; quarantine affected fish
Ich (White Spot Disease)
Small white spots resembling salt grains on body and fins, scratching against surfaces, lethargy, loss of appetite
Gradually raise temperature to 28-30°C, treat with ich medication (malachite green or formalin-based); maintain good water quality
Bacterial Fin Rot
Fraying, discoloration, or deterioration of fins; reddened fin edges; lethargy
Improve water quality with frequent water changes; treat with antibacterial medication such as kanamycin or erythromycin
Labyrinth Organ Inflammation
Gasping at surface, lethargy, loss of color, swollen head area; often triggered by cold drafts or poor air quality above water
Ensure warm, humid air above the water surface; maintain stable temperatures; improve water quality and reduce stress
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Quick Facts
- diet
- Omnivore – prefers small live and frozen foods such as daphnia, brine shrimp, and micro worms; accepts high-quality micro pellets
- lifespan
- 3-5 years
- max size
- 6.5 cm (2.5 in)
- tank size
- 10 gallons minimum
- temperament
- peaceful
Water it likes
- ph
- 5.5-7.0
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 1-10 dGH
- temperature
- 72–82°F (22–28°C)