Atyidaeinvertebratesintermediate

Red Nose Shrimp

Caridina gracilirostris

Also known as: Red Nose Shrimp, Rudolph Shrimp, Rocket Shrimp, Pinnochio Shrimp

Origin: Southeast Asia, Indo-Pacific

R

Water Parameters

Temperature2228 °C
15 °C35 °C
pH78
49
GH (Hardness)520 °dGH
0 °dGH30 °dGH
KH (Alkalinity)210 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
4 cm
Min Tank
20 L
Lifespan
1-2 years
Swimming Level
all
Schooling
Yes (10–30+)
Diet
detritivore
Temperament
peaceful

About

The Red Nose Shrimp, sometimes called the Rudolph Shrimp or Rocket Shrimp, is a distinctive Caridina species from Southeast Asia and the Indo-Pacific that departs from the soft, acidic water preferences of most of its genus. Its most striking feature is the elongated, brilliant red rostrum — a shrimp's pointed projecting extension from the head — which is dramatically vivid against the transparent to pale body and provides instant identification. A bold dark lateral stripe runs the length of the body, reinforcing the graphic, high-contrast appearance.

Unlike Crystal Reds, Tiger Shrimp, and Taiwan Bee variants, the Red Nose Shrimp prefers slightly alkaline, harder water with a higher KH and GH. This makes it a more natural companion for fish communities adapted to harder water, such as many livebearers and African cichlid tank mates, though the combination requires care in selection.

Red Nose Shrimp are notably more active and visible than many dwarf shrimp. They move quickly and confidently, spending significant time swimming in open water rather than hiding, which makes them a compelling display animal. They are gregarious and should be kept in groups where their shoaling behaviour and lively movement create a truly engaging aquarium display. They do not breed reliably in typical freshwater aquariums as larvae may require brackish conditions for development.

Care Guide

Tank Setup

A minimum of 20 litres is required, with larger tanks preferred for groups of 10 or more. Red Nose Shrimp are active swimmers and appreciate an aquarium with both open swimming space and dense planting for cover. Java fern, Anubias, Vallisneria, and mosses all work well. Provide efficient filtration and moderate flow — they appreciate oxygenated, clean water. Use a sponge pre-filter to protect small individuals.

Water Parameters

Unusually for Caridina, Red Nose Shrimp prefer slightly alkaline to neutral water: pH 7.0–8.0, GH 5–20, KH 2–10, temperature 22–28 °C. They do well in moderately hard tap water, unlike most Caridina species, though they still require dechlorinated, clean water free of heavy metals. Perform weekly water changes of 20–30%.

Feeding

Red Nose Shrimp graze actively on biofilm, algae, and fine organic particles. Supplement with algae wafers, blanched vegetables, snowflake food, and fine shrimp-specific powders. They will accept a wide variety of foods. Feed small amounts every one to two days.

Tank Mates

Compatible with peaceful community fish and other shrimp. Their preference for harder, slightly alkaline water makes them good companions for hard-water nano fish such as endlers and small livebearers. Avoid predatory fish. They may not cross-breed readily with Neocaridina but both can cohabit peacefully.

Health and Breeding

Red Nose Shrimp do not reliably complete their life cycle in standard freshwater aquariums — larvae are believed to require specific conditions including possibly brackish water. They moult regularly and require the usual shrimp precautions: no copper, stable parameters, and a mature, well-cycled tank.

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