Bee ShrimpBee Shrimp

Information on this black colored variation of the common Crystal Red Shrimp.
Wine Red ShrimpWine Red Shrimp

Information on this Red colored variation of Taiwan Bee Shrimp
Panda ShrimpShadow Panda Shrimp

Information on the Shadow Panda variation of Taiwan Bee Shrimp
Panda ShrimpPanda Shrimp

Information on the Panda variation of Taiwan Bee Shrimp
Bee ShrimpBlack King Kong Shrimp

Information on this black colored variation of Taiwan Bee Shrimp
Bee ShrimpBlue Jelly Shrimp

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African Filter ShrimpAfrican Filter Shrimp

Information on this large filter feeding shrimp from Africa.
Amano ShrimpAmano Shrimp

Information on this very popular shrimp. Its name comes from Takashi Amano, the creator of ADA, who used these shrimp for algae eating purposes. It cannot breed in pure freshwater.
Bamboo ShrimpBamboo Shrimp

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.
Black Tiger ShrimpBlack Tiger Shrimp

Information on this elusive all black color variation of the common Tiger Shrimp. Its all black coloration is from selective breeding to widen the black stripes of the common Tiger Shrimp.
Blue Bee ShrimpBlue Bee Shrimp

Information on this newly introduced species to the hobby. Not much is known and they are caught in the wild. Captive breeding is possible.
Blue Pearl ShrimpBlue Pearl Shrimp

Information on this beautiful blue colored species of the wild N. zhangjiajiensis shrimp.
Blue Tiger ShrimpBlue Tiger Shrimp

Information on this blue coloration variation on the common Tiger Shrimp. It is expensive and sometimes hard to find.
Tangerine TigerTangerine Tiger

Information on the Tangerine Tiger Shrimp.
Super Tiger ShrimpSuper Tiger Shrimp

Information on this variation on the common Tiger Shrimp. Easy to keep and a beautiful shrimp
Cardinal ShrimpCardinal Shrimp

Information on the very popular shrimp from Sulawesi Indonesia. Its colors are awesome.
Crystal Red ShrimpCrystal Red Shrimp

Information on this extremely popular, difficult, expensive, and complex shrimp species. Selectively bred for coloration and other features.
Dark Green ShrimpDark Green Shrimp

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.
Ghost Shrimp ShrimpGhost-Glass-Grass Shrimp

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.
Golden Bee ShrimpGolden Bee Shrimp

Information on this all white relative of the Crystal Red Shrimp, Bee Shrimp, Orange Bee Shrimp and others. It is nicely colored but little is known as to its origin.
Harlequin ShrimpHarlequin Shrimp

Information on this specific species of shrimp found in Sulawesi Indonesia.
Malaya ShrimpMalaya Shrimp

Information on this newly introduced and soon to be common species of shrimp.
Neocaridina Heteropoda ShrimpNeocaridina Heteropoda Shrimp

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Orange Bee ShrimpOrange Bee Shrimp

Information on this wild species and the grandfather of the Crystal Red Shrimp, Bee Shrimp and others. Can be rare and hard to find.
Orange Sakura ShrimpOrange Sakura Shrimp

This is a color morph of the common Neocaridina species Red Cherry Shrimp
rili ShrimpRili Shrimp

This is a color morph of the common Neocaridina species Red Cherry Shrimp
Purple Zebra ShrimpPurple Zebra Shrimp

Information on this wild caught species. Unfortunately it cannot breed in pure freshwater and has slowly disappeared from the hobby as a result.
Red Cherry ShrimpRed Cherry Shrimp

Information on the most common and most popular shrimp in the hobby. This is the ultimate beginners shrimp and most hobbyists begin with this species before venturing into more difficult/expensive shrimp.
Fire Red ShrimpFire Red Shrimp

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Red Tiger ShrimpRed Tiger Shrimp

Information on this red color variation of the common Tiger Shrimp. This color variation is apparently found in the wild and not selectively bred.
Red Tupfel ShrimpRed Tupfel Shrimp

Information on this very rare and almost impossible to find shrimp in the hobby. Hopefully it will someday become more available.
Snowball ShrimpSnowball Shrimp

Information on this beautiful all white selectively bred shrimp. Its name comes from its eggs which are all white resembling snowballs.
Sulawesi ShrimpSulawesi Shrimp

A gallery of photos of many different kinds of Sulawesi Shrimp from Indonesia. Newly introduced to the hobby in late 2007.
Tiger ShrimpTiger Shrimp

Information on this somewhat common shrimp. It is the less rare variation than its cousins: Blue Tiger, Red Tiger, Golden Eye and others.
White Bee Shrimp White Bee Shrimp

Information on this elusive and very rare species of Bee Shrimp. It is definitely a cool looking shrimp.
Yellow ShrimpYellow Shrimp

Information on this selectively bred shrimp from the wild N. Heteropoda species. It breeds very well.
Cambarellus montezumae Crayfish"Cambarellus montezumae" Crayfish

Information on care and breeding of this crayfish species.
Cambarellus patzcuarensis Crayfish"Cambarellus patzcuarensis" Crayfish

Information on care and breeding of this crayfish species.
Procambarus acanthophorus Crayfish"Procambarus acanthophorus" Crayfish

Information on care and breeding of this crayfish species.
Procambarus allenii Crayfish"Procambarus allenii" Crayfish

Information on care and breeding of this commonly blue colored crayfish species.
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Information on care and breeding of this popular crayfish species which comes in several different colors.
Procambarus cubensis Crayfish"Procambarus cubensis" Crayfish

Information on care and breeding of this crayfish species.
Procambarus enoplosternum Crayfish"Procambarus enoplosternum" Crayfish

Information on care and breeding of this crayfish species.
Procambarus sp. marble Crayfish"Procambarus sp. marble" Crayfish

Information on care and breeding of this crayfish species.
Procambarus pubescens Crayfish"Procambarus pubescens" Crayfish

Information on care and breeding of this crayfish species.
Procambarus spiculifer Crayfish"Procambarus spiculifer" Crayfish

Information on care and breeding of this crayfish species.
Procambarus toltecae Crayfish"Procambarus toltecae" Crayfish

Information on care and breeding of this crayfish species.
Procambarus vasquezae Crayfish"Procambarus vasquezae" Crayfish

Information on care and breeding of this crayfish species.
Procambarus versutus Crayfish"Procambarus versutus" Crayfish

Information on care and breeding of this very cool colored species of crayfish.
Apple SnailApple Snail

Information of the most common snail found in pet stores, the Apple Snail. Are they good or bad for a shrimp tank?
Malaysian Trumpet Snail SnailMalaysian Trumpet Snail

Information on the common Malaysian Trumpet Snail. They are great for all aquariums given several reasons.
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Sulawesi SnailSulawesi Snails

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AeglaAegla sp. argentina

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Harlequin Shrimp | Caridina cf. spongicola

 

 

Harlequin Shrimp

Caridina cf. spongicola

 

Overview

The Harlequin Shrimp is from Sulawesi, Indonesia and has very unique coloration and marking. It is the smallest of all of the recently discovered Sulawesi Shrimp. The Harlequin Shrimp is also extremely shy until it is comfortable with its new environment. Once it is acclimated to the aquarium it will come out more and its colors will really show.

 

Origin and Background

The Harlequin Shrimp is from Sulawesi, Indonesia. Sulawesi is one of the islands encompassing the country of Indonesia. The Harlequin Shrimp is caught in one of several lakes in Sulawesi. I highly suggest that you read the article Sulawesi Expedition for detailed information on Sulawesi as well as more information on is habitat. There are also underwater photos of the lake system itself.

The Harlequin Shrimp is a unique species as far as its environment. It actually lives and eats off of the freshwater sponges that exist in the lake. That is why it was given the name Caridina spongicola. It was originally thought that the Harlequin Shrimp would need these sponges in order to survive, but that is not true. It used the sponges to feed off of the algae or particle found in the sponge, basically cleaning it. Captive feeding of this species without the sponge is fine and the shrimp will survive.

 

Water Parameters

As with all Sulawesi Shrimp it is highly recommended that you keep the Harlequin Shrimp in a temperature of at least 78F. Anything lower can kill this species. It is also recommended that you keep this species in a tank with hard water and a ph of no less than 7.0. Most hobbyists set their Sulawesi tanks with a ph oh 8.0.

I am currently keeping the Harlequin Shrimp in the same tank with a few other species from Sulawesi. The tank consists of ADA Amazonia substrate, a temperature of 84F and a pH of 7.0. Some have stated that the low ph of 7.0 due to the ADA Amazonia is not good for this species. Right now I disagree. All of the Sulawesi Shrimp that I currently house are doing very well in this setup and so far even the babies are doing very well.

 

Sexing

Sexing of the Harlequin Shrimp is unknown. I do not know how you can tell the difference between the males and females. I have tried to read online about how to sex any of the Sulawesi Shrimp and apparently it is not yet known. Perhaps as more time progresses it will be easier to sex these shrimp but right now it seems that all males and females have the exact same coloration. My guess is that the females may be a bit bigger than the males. If size is the only indicator than it may be difficult to sex them anyhow since the Harlequin Shrimp is small at adulthood.

 

Breeding

I have had the Harlequin Shrimp produce babies and the babies seem to do ok. I was lucky to receive some pregnant Harlequin Shrimp from overseas. The pregnant ones from the wild hatched their eggs and now I have some baby Harlequins. I hope to have them grow to adulthood and reproduce in pure captivity.

Breeding is done in complete freshwater, not salt or brackish water is required whatsoever. There is also no larval stage. The adult females carry the eggs until they hatch, producing miniature shrimp. The females carry roughly 10-15 eggs. It takes approximately 20-30 days for the eggs to hatch. The babies immediately show the same color as the adults, just not as intense. I will update as time progresses. For more information on the reproduction cycle of freshwater aquarium shrimp please read the article Shrimp Reproduction.

 

Appearance

The Harlequin Shrimp has a very distinct coloration. It has a mixture of three colors: black, red and white. These three colors offset each other very well and offer a very unique contrast. Harlequin is an art style usually depicted in jesters or jokers from the middle ages. The name Harlequin Shrimp may very well have derived from the D.C. Comic Book character "Harley Quinn" who has very similar coloration. Please visit this Wikipedia Page for more information on the Harley Quinn character. Compare the photos of the character to the actual Harlequin Shrimp shown below.

 

Behavior

As mentioned before, the Harlequin Shrimp can be a very shy species. It can hide in the shadows and sometimes not appear often. I attribute this behavior to the fact that the Harlequin Shrimp not being comfortable in its new environment, the aquarium. Once this species becomes acclimated and does not fear predators it will come out in plain site. If you notice that your Harlequin Shrimp are frequently hiding then it is a sign that they need more time to get comfortable or that your tank parameters are not to its liking. It is very important that you have clean water and stick to the water parameters mentioned previously on this page.

 

Feeding

I feed the Sulawesi Shrimp, including the Harlequin Shrimp, the same as I feed all of the other shrimp I keep. The occasional algae water and other invert food. It seems to prefer to eat at night as it mostly hangs out on the plants or substrate during the day. It prefers to be in the shade under cover of plants. I highly recommend feeding the Harlequin Shrimp when the lights are out. It will feel more comfortable and feed versus when the lights are on.

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. Overfeeding is a known cause of death and can also cause water quality issues. Remember that shrimp are scavengers in the wild. They will eat whatever they find and are not used to a constant food source 24/7. Not feeding for one or two days is fine and will not harm this species at all. Sometimes I will not feed for a couple of days in order to let the shrimp cleanse their systems and keep the water clean at the same time.

 

Harlequin Shrimp Video and Photos

 

Related Pages

Sulawesi Shrimp

Brown Camo Shrimp

Cardinal Shrimp

Orange Delight Shrimp

Red Goldflake Shrimp

Sulawesi Expedition

Shrimp Reproduction

Shrimp Species List Page

Aquatic Inverts: An Overview

Safe Tankmates for Shrimp

 

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