Darwin Algae Eater Shrimp
Darwin Algae Eater Shrimp

Darwin Algae

Darwin Algae Eater Shrimp The Darwin Algae Eating Shrimp is an undescribed species of shrimp that was, until recently, classified as Caridina longisrostris. However, upon scientific revision, it wa...
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Darwin Algae Eater Shrimp

The Darwin Algae Eating Shrimp is an undescribed species of shrimp that was, until recently, classified as Caridina longisrostris. However, upon scientific revision, it was concluded that the species was more closely related to C. sp. NTnilotica. The species has been collected in numerous locations in the Darwin area, including; Leanyer Swamp, Buffalo Ck., Holmes Jungle, Daly River, and Roper River.

The Darwin Algae Eating Shrimp is a very attractive small shrimp that needs to be kept with smaller non-predatory fish. 



It is an ideal species for the consumption of algae in the planted aquarium. It seems to favor the filament hair type algae as a preferred food source. Adding a significant number of these to an aquarium will greatly contribute to keeping algae at bay. It will also consume detritus. If no algae are present, these shrimp will feed on normal fish foods. Personally, I feed them food intended for catfish and loaches.


The female is larger with color, males are small thin, and clear. The colors can range from light green to red with a white stripe running from the rostrum to the tip of the tail.


This species does not reproduce very well in freshwater, however, some juveniles do survive. There is no research for reproducing this species however it appears to be similar to some other Atyiid shrimps in that it needs a marine or brackish phase in its life cycle. To produce numbers of this shrimp its larvae are raised in brackish ponds with salinity over 17ppt with high dissolved oxygen levels. The presence of algae is vital to raising large quantities of young. Once the larvae are through their first few molts and resemble their parents they are changed over to freshwater.

Preferred Water Parameters:

  • Temperature:22-27 degrees celsius
  • pH Level:6.8-7.6
  • General Hardness: Soft-Moderate

Range: Northern Territory, Australia.

Reproduction: After mating the female carries her eggs under her tail. The young disperse when they are fully developed.

Feeding: Omnivorous and Herbivorous (grazes on algae). Will also scavenge fish foods.

Size: 1.5cm -2 cm +

Additional Comments: Native Australian shrimp, very useful for algae control in planted tanks. Ensure fish tankmates are of similar small size. Please note: avoid the use of copper-based treatments if invertebrates are present in the tank.

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Darwin algae shrimp

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