Sunset Guppy Care Guide - Aquarium Setup, Diet & Breeding

Sunset Guppies are a colourful domestic strain of the enduringly popular guppy, Poecilia reticulata. Their name generally refers to warm orange, red, yellow and golden tones across the tail, dorsal fin and rear half of the body, although the exact pattern varies between breeders and individual fish. Some have a vivid sunset-like blend, while others show stronger red or orange markings against a pale or metallic base.

Males are small, active and highly ornamental, with enlarged flowing fins and intense colouration. Females are larger and usually more rounded, with subtler colours and a dark gravid spot that becomes more noticeable when they are carrying developing young. Like other guppies, Sunset Guppies are constantly on the move, exploring the upper and middle levels of the aquarium.

In the wild, guppies inhabit a broad range of slow-moving and shallow waters, including streams, pools, drainage channels and vegetated margins. Their adaptability has helped them become established in many regions beyond their native range, sometimes through accidental or deliberate introductions. Wild populations are typically much less dramatically coloured than aquarium strains.

The Sunset Guppy is not a separate wild species but a selectively developed ornamental form. Its lively behaviour, striking colours and livebearing reproduction have made it a familiar choice for community aquariums, although the strain’s appearance can differ considerably depending on its breeding line.

Sunset Guppies are a selectively bred colour variety of Poecilia reticulata, a species native to northern South America, including Venezuela, Guyana, Suriname and parts of Brazil. Wild guppies also occur naturally across several Caribbean islands, including Trinidad and Tobago and Barbados, while aquarium strains are now bred worldwide.

A group of Sunset Guppies should have at least a 40-litre aquarium, with a larger tank preferable when keeping several females or allowing for their frequent offspring. A tank around 60 cm long gives active adults useful swimming space. Use gentle to moderate filtration with a covered intake, open swimming areas, and dense live plants or floating vegetation for shelter and fry cover. Fine gravel or sand is suitable, while smooth decor, wood and rounded stones can add structure without damaging their flowing fins. A secure lid is helpful because guppies can jump.

Males usually reach about 3–4 cm (1.2–1.6 in), while females can grow to approximately 5–6 cm (2.0–2.4 in). Females are therefore distinctly larger and heavier-bodied than males.

Sunset Guppies are omnivores and thrive on a varied diet of quality tropical flakes or small granules, supplemented with live or frozen foods such as baby brine shrimp, daphnia and mosquito larvae. Spirulina-based foods and softened vegetables can provide useful plant matter. Offer small portions once or twice daily, feeding only what they consume promptly, and provide appropriately fine food for fry.

Sunset Guppies are peaceful community fish and can be kept with similarly peaceful species such as small tetras, rasboras, peaceful Corydoras, small danios, white cloud mountain minnows and other non-aggressive livebearers. Avoid tiger barbs, serpae tetras and other fin-nippers, as well as large cichlids, predatory fish and species likely to eat adult guppies or their fry. Long-finned males may be especially vulnerable to persistent fin damage. Mixing guppies with other livebearers can also produce large numbers of hybrid fry, particularly with Endler’s livebearers.

Sunset Guppies are livebearers and usually breed readily in a mature aquarium. Keep a ratio of roughly two or three females for every male to reduce persistent attention, and provide dense plants or floating cover where fry can hide. After mating, a female may produce around 20 to 60 free-swimming fry after approximately four weeks, although adults may eat them. Separate the young or add a breeder-rearing area if a high survival rate is wanted; fry can be fed finely crushed flake food or suitably small live foods.

Males are smaller and more vividly coloured, with larger patterned caudal and dorsal fins and a narrow gonopodium instead of a conventional anal fin. Females have a fuller, rounded abdomen, shorter and less elaborate fins, generally more subdued colouration and often a visible dark gravid spot near the rear of the abdomen.