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Information on this black colored variation of the common Crystal Red Shrimp.
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Information on this wild caught species which is a filter feeder. It is very common to find in most pet stores and online. It is not possible to breed this species in pure freshwater.
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Information on this extremely popular, difficult, expensive, and complex shrimp species. Selectively bred for coloration and other features.
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Information on this beautiful dark green colored shrimp. Its eggs are a nice lime green which really make this shrimp stand out. Its true scientic name and genus are in question.
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Information on this wild caught and extremely cheap freshwater shrimp. It carries many different names and can be found in most pet stores. It is considered a feeder shrimp for freshwater aquarium fish.
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Information on this very rare and almost impossible to find shrimp in the hobby. Hopefully it will someday become more available.
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Information on this somewhat common shrimp. It is the less rare variation than its cousins: Blue Tiger, Red Tiger, Golden Eye and others.
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Amano Shrimp | Caridina multidentata

 

 

Amano Shrimp

Caridina multidentata

 

Overview

The Amano Shrimp is a very popular shrimp in the hobby. It is second in popularity to the Red Cherry Shrimp. The name Amano Shrimp originates from the well known aquarist Takashi Amano who frequently uses the shrimp in his aquariums as algae eaters. However most people do not know that the Amano Shrimp is a difficult shrimp to breed and that virtually all Amano Shrimp are caught in the wild and then sold to hobbyists. Captive breeding has been achieved but is rare.

 

Popularity

As stated above the popularity originated from the aquarist Takashi Amano. Most local fish stores carry this shrimp and even the large pet chains carry it as well. Hobbyists sometimes begin with this species to due the ease of acquiring it. The notion that it is a superb algae eater also attracts aquarists who are into planted tanks. Unfortunately most of the hobbyists who acquire the Amano Shrimp do not know that it cannot be bred in freshwater and wonder why the pregnant females with many eggs never produce babies.

 

Deaths

It is not uncommon for the Amano Shrimp to die shortly after introduction to the aquarium. Virtually all Amano Shrimp are wild caught and are not used to captive conditions. Also, a lack of feeding can cause death as well. Most first timers keeping these shrimp think that they are solely algae eaters and can live off of the tank and require no food. You must feed this shrimp. Deaths are also caused by stress from shipping, handling, lack of acclimation to new conditions and from being introduced to multiple tank parameters. Remember that the Amano Shrimp is caught in the wild. It goes through a lot of stress during capture and during shipping around the world. Once it reaches the local fish stores it undergoes even more stress. When it ultimately ends up in the hobbyists tank it can be marked for death regardless of what the hobbyist does to keep it alive. Do not be surprised if this shrimp dies on you shortly after introduction.

 

Breeding

As stated before the Amano Shrimp requires brackish water in order to breed successfully. The pregnant females carry many eggs, most likely due to the loss rate of the larvae after hatching. The shrimp hatches as a tiny larvae free floating in the water. It is not like other shrimp which hatch as miniature adults. The larvae are very delicate and require special care. Below is a quick run down on information required to breed this species in captivity. It is a difficult task to captive breed the Amano Shrimp. However, if you are up for the challenge then good luck. It is definitely an achievement if you are successful!

 

Captive Breeding

The adults are kept in a 40 gallon 'breeder' tank with a sponge filter and lots of hornwort. The pH is close to neutral and the temperature around 75 degrees F. They eat 'GP Pellets' plus the occasional algae tablet -- there's also a lot of hair algae in the tank, more than they can keep up with.

Larvae are raised in full-strength (35 ppt) seawater that's pea-green with Tetraselmis algae. No supplemental foods are added. The latest batch was raised in a 2.5-gallon tank -- there was somewhat high mortality, so more space may've been helpful.

I've tried a variety of raising conditions. So far, the best results are with:

24-hour lighting
Gentle aeration
mid-70's Farenheit

In those conditions the larvae began metamorphosing into postlarvae after about 20 days. Higher temperatures seem to slow development. It took just about 6 months for a full life-cycle from hatching to egg production.

 

Feeding

It is recommended that the Amano Shrimp be fed like any other shrimp in the hobby. Using this species solely for the purpose of algae eating will not suffice in the long term for the shrimps health. These are rather large shrimp and require a good supply of food. They eat anything from blanched spinach, zucchini, algae wafers, shrimp pellets, fish flakes, bloodworms, and more. Feeding is best done once a day. Only feed an amount of food that the shrimp can finish within 2-3 hours maximum. It is not good to feed in excess and have food sitting for too long.

 

Additional Photos

 

Related Pages

Shrimp Species List Page

Safe Tankmates for Shrimp

Will These Shrimp Interbreed?

Aquatic Inverts: An Overview

Setting up a Shrimp Tank

Ferts & Shrimp: Is it safe?

 

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