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Blue Dream shrimp

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Blue Dream is a selectively bred Neocaridina davidi in a deep, opaque blue that covers the whole body, legs included. The best lines look almost navy against dark substrate. As in every Neocaridina, females are larger and more richly, opaquely coloured than males, which are smaller and paler.

The blue comes from iridophores, colour cells in the shell that reflect blue light, or from a lack of dark pigment over bluish flesh. Wild N. davidi are a mottled greenish brown. Every colour line was bred out of that, and a colony left to itself drifts back toward it over generations unless you remove the paler shrimp.

They breed readily. Shrimp mature at about two months, and a berried female carries roughly 20 to 30 eggs for about three weeks. The young hatch as tiny copies of the adults, with no larval stage, so a colony grows in an ordinary tank. Colour is strongest on a dark substrate with green plants. Never release them outdoors: N. davidi has become invasive in warm waterways in several countries, including the United States.

Keeping Blue Dream shrimp in New England water

Like every Neocaridina, it needs a cycled tank, GH around 6–8 and a stable pH near neutral. Most Massachusetts tap and well water is soft, so check yours with the shrimp water checker or read our New England water guide. Pickup in Groton by arrangement, or shipped Monday to Wednesday.

Part of our High-grade Neocaridina shrimp. Also: Blue Velvet shrimp · Green Jade shrimp · Chocolate shrimp · Orange Rili shrimp · Red Rili shrimp · Blue Jelly shrimp · Black Rose shrimp · Carbon Rili shrimp · Orange Sakura shrimp · Bloody Mary shrimp · Yellow Goldenback shrimp.