Macropodus opercularis – Paradise Fish (~5–7 cm)

A striking labyrinth fish with vibrant blue-green and reddish vertical bands on a pale background. Males are more colorful, larger, and have elongated fins compared to females. Known for their bold presence and flamboyant displays. 

Tank Setup:

• Size: Minimum 80 cm long or about 100 L for a pair; larger is better to reduce aggression. 

• Decor: Dense planting, floating cover, driftwood, caves, and secure lid—excellent jumpers and bubble-nesters. 

• Water Flow: Gentle to moderate, with still areas for nesting. 

Water Conditions:

• Temperature: 16–26 °C (some sources say up to 28 °C for spawning). 

• pH: 6.0–8.5; soft to medium hardness (e.g., 4–19 dGH). 

Diet:
Omnivorous—thrives on high-protein foods like insects, brine shrimp, bloodworms, plus quality flakes or pellets and occasional vegetable matter. 

Behavior & Tankmates:

• Territorial and aggressive, especially adult males. Best kept as a single male with one or more females, or solitary. 

• Suitable tankmates: Larger, robust, non-aggressive species like larger tetras, loaches, gouramis, or catfish. Avoid small or flowing-finned fish. 

Breeding:
Male builds a bubble nest among floating plants. After spawning, the female should be removed to prevent aggression; the male guards the nest. Fry emerge in 24–50 hours and grow fast; offer infusoria or brine shrimp initially. 

Lifespan & Origin:

• Lifespan: Up to 8–10 years with proper care.