Paradise Fish Care Guide - Aquarium Setup, Diet & Breeding

Paradise Fish are striking members of the gourami family, with elongated bodies marked by alternating blue-green and reddish-brown bands. Their flowing fins and bright coloration become especially impressive when the fish is displaying, while the male's extended tail and pointed fin rays give him a particularly dramatic profile.

This species is an air-breathing labyrinth fish, allowing it to gulp atmospheric air from the water's surface. It is an active, intelligent fish that often learns to recognise its keeper and may patrol every level of the aquarium rather than remaining hidden.

Paradise Fish are territorial by nature, especially mature males. They may flare their fins, chase rivals and defend a chosen area, making their social behaviour far more assertive than that of many other small community fish. Females and young fish are generally less combative, although individual temperament varies.

In the wild, they are associated with quiet, heavily vegetated waters that can experience seasonal changes in temperature and oxygen levels. Their hardiness and tolerance of cooler water helped make Paradise Fish one of the earliest tropical aquarium fish kept in Europe, long before many modern ornamental species became widely available.

Paradise Fish are native to East Asia, including southern and eastern China, Taiwan, Hainan and parts of northern Vietnam and Laos. They inhabit slow-moving waters such as rice fields, marshes, ponds, ditches and sluggish streams, and have also been introduced to various regions outside their native range.

A minimum aquarium of around 75 litres is recommended for a single adult or a carefully managed pair, with a tank at least 90 cm long offering more useful floor space than a tall aquarium. Use a secure lid because Paradise Fish are capable jumpers and need access to warm, humid air above the water. Include dense planting, floating vegetation, wood and rocks to create territories and break lines of sight, while leaving open areas for swimming. A dark sand or fine-gravel substrate helps display their colours, and gentle water movement is preferable to a strong current.

Males can reach about 10 cm (4 in) in length, while females usually remain smaller at around 8 cm (3.1 in).

Paradise Fish are omnivores with a strong preference for meaty foods. Offer a quality floating or slow-sinking pellet as a staple, supplemented with frozen or live foods such as bloodworms, brine shrimp, daphnia and mosquito larvae. They also accept small insects and some vegetable matter. Feed modest portions once or twice daily, removing uneaten food to maintain water quality.

Paradise Fish can live with robust, similarly sized fish that appreciate comparable conditions, including larger peaceful barbs, danios, weather loaches and some sturdy rasboras. Introduce tankmates carefully and provide plenty of visual barriers. Avoid keeping males together, and be cautious with pairs because a male may harass a female unless the aquarium is spacious and densely decorated. Avoid delicate, slow-moving or long-finned fish such as fancy guppies, bettas and angelfish, as well as fin-nipping species and very small fish that may be chased or eaten.

Paradise Fish are bubble-nest breeders. Provide floating plants or another sheltered surface, and condition a compatible pair with varied, protein-rich foods. The male builds a nest, courts the female and gathers the eggs into it after spawning. The female should be removed after spawning because the male may become aggressive, and the male should be removed once the fry are free-swimming. Feed the tiny fry infusoria or a suitable liquid fry food before progressing to baby brine shrimp.

Males are generally larger and more vividly coloured, with longer, more pointed dorsal, anal and caudal fins. Females are shorter-bodied, less intensely marked and have noticeably shorter, rounder fins, with a fuller abdomen when carrying eggs.