Lazuli Blue Guppy

Description

Lazuli blue guppies take their name from lapis lazuli, the deep blue stone the colour is meant to evoke, and this fish carries that rich cobalt tone across almost the entire body. It is a bold, saturated colour rather than a pale or washed out blue, the kind that holds up well even under normal room lighting rather than only showing its best under a bright aquarium light.

Right around the gill plate there is a soft blush of red pink that breaks up the solid blue just slightly, a small but noticeable accent that adds a bit of warmth to what would otherwise be an entirely cool toned fish. That gill blush tends to be one of the first things people notice once they look past the overall blue body colour.

The caudal and dorsal fins continue the theme with a solid dark navy colour, deep enough that it can look almost black in low light and only reveals its true blue undertone when a stronger light source catches it directly. This creates a fish that reads as a single confident block of colour from a distance, with the red pink gill accent as the one break in an otherwise uniform blue presentation.

Body shape is standard, letting the lazuli blue colouring do all the visual work without any unusual proportions competing for attention. It is a strain that tends to photograph as a deep, almost jewel toned blue, especially under strong lighting or with a flash.

Males display the full lazuli blue body along with the red pink gill blush and solid navy fins. Females are rounder and plainer as is typical, carrying only a muted version of the blue tone and considerably smaller fins without the same depth of navy colouring.

This is a fairly hardy strain overall and does not call for any unusual tank setup, standard filtration, stable temperature and regular partial water changes are enough to keep it looking its best. A sponge filter or a guarded power filter intake both suit this fish fine since the fins, while a good solid size, are not oversized or fragile in the way some ornamental strains can be.

Good tankmates include other peaceful livebearers, small tetras, corydoras and similar calm community fish. As always with guppies, avoiding fin nippers helps keep the navy caudal and dorsal fins intact and looking their best over the long run.

As livebearers, a healthy pair kept in stable water will produce broods of fully formed, free swimming fry roughly every four weeks, with no egg laying stage at all. A varied diet built around quality flake or micro pellets daily, with live or frozen baby brine shrimp or daphnia added a few times a week, supports strong growth and helps that deep lazuli blue colour saturate fully as the fish matures. Regular water changes of around twenty five percent weekly also help prevent the kind of water quality decline that can leave blue toned strains looking duller than they should.

Sold as a breeding pair.

Deep blue strains like this one tend to show their truest colour under good lighting, so a tank with a reasonably strong light source and a darker substrate will generally bring out the lazuli tone better than dim lighting over a pale gravel bed. Consistency in water parameters also plays a real role in how saturated the blue ends up looking, since guppies under any kind of ongoing stress from fluctuating temperature or poor water quality tend to fade toward a duller, greyer version of their true colour. Regular testing for ammonia and nitrite alongside the usual weekly water change routine helps this strain hold its rich cobalt tone consistently over time.