Metallic Yellow Lace Guppy Care Guide - Setup, Feeding & Breeding

Metallic Yellow Lace Guppies are selectively bred forms of the familiar guppy, prized for the reflective yellow-gold sheen across the body and the delicate lace-like patterning in the fins and tail. Their flowing tails and lively colours make them especially eye-catching under aquarium lighting, with individual fish varying in the balance of metallic colour and patterned markings.

These small livebearers are active, peaceful and constantly on the move, exploring the upper and middle levels of the aquarium. Males are notably smaller and more ornate, while females have a fuller body and are often less intensely coloured. Their lively display behaviour is generally gentle, although males may persistently court females.

Wild guppies come from a broad range of shallow tropical habitats, including slow-moving streams, drainage channels, pools and vegetated margins. They are adaptable fish that may encounter clear or slightly stained water, gentle flow and abundant cover in their natural range.

The metallic yellow lace form is the result of generations of ornamental selection by guppy breeders. Because it is a cultivated variety, its appearance is not fixed: tail shape, lace pattern, metallic coverage and colour intensity can differ between breeding lines.

Poecilia reticulata is native to northern South America, including parts of Venezuela, Guyana, Suriname and northern Brazil, as well as nearby Trinidad and Tobago. Metallic Yellow Lace Guppies are selectively bred aquarium strains rather than a naturally occurring wild population.

A group of Metallic Yellow Lace Guppies should have at least a 60-litre aquarium, with a larger tank preferable for mixed-sex groups or a growing colony. A practical minimum footprint is around 60 × 30 cm, allowing open swimming space as well as cover. Use gentle filtration, moderate circulation, and a secure lid because guppies can jump. Fine gravel or sand works well, while hardy live plants, floating vegetation and moss provide shelter for fry and help the fish feel secure. Leave clear areas at the front and centre for swimming.

Males reach about 3 cm (1.2 inches), while females can grow to around 5–6 cm (2–2.4 inches). The ornamental strain may vary slightly by breeding line, but females are consistently larger and deeper-bodied than males.

Offer a varied omnivorous diet based on a quality small flake or micro-pellet, supplemented with finely crushed foods, spirulina or other vegetable matter, and occasional live or frozen foods such as baby brine shrimp, daphnia and mosquito larvae. Feed small portions once or twice daily, giving only what the fish consume promptly. Young guppies benefit from frequent small meals and appropriately tiny foods.

Metallic Yellow Lace Guppies suit peaceful community aquariums and can be kept with similarly sized, non-aggressive fish such as small tetras, rasboras, platies, mollies, peaceful corydoras and small, gentle loaches. Avoid tiger barbs, larger barbs, aggressive gouramis, territorial cichlids and other fin-nipping or predatory species, which may damage their long fins or eat smaller guppies. Keep in mind that guppies reproduce quickly, so a single-sex group may be preferable if fry are not wanted.

Metallic Yellow Lace Guppies are readily bred livebearers. Keep a healthy trio or larger group with more females than males, and provide dense plants or spawning mops where fry can hide. Females give birth to fully formed free-swimming young after a gestation of roughly four weeks, although timing varies. Adults may eat the fry, so move heavily pregnant females to a well-planted birthing area or separate the young after birth. Offer the fry finely powdered food, baby brine shrimp or a quality liquid fry food.

Males are smaller, slimmer and usually much more brightly patterned, with enlarged flowing caudal and dorsal fins. Their anal fin is modified into a gonopodium used for reproduction. Females are larger and rounder-bodied, generally less ornate, and may develop a dark gravid spot near the rear of the abdomen when carrying developing young.