15- Sci:Orconectes luteus
Common:Golden Crayfish
Origin:
Size:14 cm
Temp:22-24 C
16- Sci:Orconectes luteus - Black
Common:Black-tailed Golden Crayfish
Origin:
Size:14cm
Temp:22-24 C
17- Sci:Orconectes medius
Common:Saddle-back Crayfish
Origin:
Size:14cm
Temp:22-24 C
18- Sci:Orconectes neglectus
Common:Ringed Crayfish
Origin:-
Size:14cm
Temp:22-24 C
19- Sci:Orconectes ozarkae
Common:Ozark's Crayfish
Origin:
Size: 14cm
Temp:22-24 C
20- Sci:Orconectes punctimanus
Common:Spotted Hand Crayfish
Origin:
Size:12cm
Temp:22-24 C
21- Sci:Orconectes virilis ( Click here for more Information )
Common:Northern Crayfish or Virile Crayfish
Origin:
Size:14cm
Temp:22-24 C
22- Sci:Pacifastacus leniusculus ( Click here for more information )
Common:Signal Crayfish
Origin:North America
Size:16cm
Temp:
Download guide : Crayfish Identification Guide
Genus :Procambarus
23- Sci:Procambarus alleni ( Click here for more information )
Common:Blue Florida Crayfish
Origin: Northeast Mexico and southern USA and New York
Size:15cm
Temp:22-24C
Procambarus alleni is a species of freshwater crayfish endemic to Florida. Its natural range is the area east of St. Johns River and all of Florida from Levy County and Marion County southwards, as well as on some of the Florida Keys.[2] It is widely sold in the aquarium trade under a variety of names, including the blue crayfish or electric blue crayfish. It is included on the IUCN Red List as a species of Least Concern. This Blue Cray Fish is also referred to as the Florida Cray.
24-Sci:Procambarus acutus
Common:White River crayfish
Origin:America
Size:
Temp: 22- 24C
25-Sci:Procambarus bouvieri
Common:America
Origin:
Size:
Temp:22-24 C
26-Sci:Procambarus clarkii
Common:Louisiana Crayfish
Origin:North America
Size:20cm
Temp:22-24 C
Origin: originally USA, now: almost world wide
Max body size: 12cm+
Keeping:
You can keep 5 or more in an aquarium of 100cmx40cm. Bigger tanks allow for a greater number of individuals. A wide range of pH and GH is possible as long as one avoids the extremes. Very tolerant to a wide range of water conditions and quality. You can literally breed them in plastic buckets.
Behaviour:
like most crayfish these are omnivorous and will eat your plants Make sure to provide enough room if you keep several specimens, if not they will reduce their numbers with each molt.
How to tell apart males from females: As usual
Breeding:
As usual. 300 and more eggs for big females. Make sure to provide enough room and food for the fry. Cannibalism begins to get extreme with 2-3 cm if too crowded.
spread: wild type (red): most common, white, blue and orange: common
remark: The wild type is red, there is a blue, orange and a white color morph that is commonly available. Many more color morphs might be out there.
Procambarus Clarkii sp. "Blue"
27-Sci:Procambarus cubensis
Common:Cuba Crayfish
Origin:Cuba
Size:8cm
Temp:22-24 C
Origin: Cuba
Max body size: 10cm
Keeping: You can keep one pair in an aquarium of 60cmx30cm. Bigger tanks allow for a greater number of individuals. A wide range of pH and GH is possible as long as one avoids the extremes. Quite tolerant to a wide range of water conditions and quality.
Behaviour: like most crayfish these are omnivorous and will eat your plants. They show a quite aggressive behaviour and will decimate their numbers, if there is not enough room. Will eat their young.
How to tell apart males from females: As usual (longer pincers, gonopods in males, broader tail in females)
Breeding: as usual.
spread: still common, beginning to get rare
remark: This was the first crayfish species found in the aquarium hobby in East Germany at 1980 or earlier. Began to become available in West Germany after the Reuinion.
28-Sci:Procambarus fallax
Common:
Origin:America
Size:
Temp:22-24C
29-Sci:Procambarus immunis
Common:America
Origin:
Size:
Temp:22-24 C
30-Sci:Procambarus llamassi
Common:
Origin:Mexico
Size:20cm
Temp:22-24C
30-Sci:Procambarus milleri
Common:Florida Cave Crayfish
Origin:Southern Florida
Size:5cm
Temp:22-24C
31- Sci:Procambarus peninsulanus
Common:Red Crayfish
Origin:Southern Florida
Size:5cm
Temp:22-24C
-
32-Sci:Procambarus sp.
Common:Marmor Crayfish
Origin:North America
Size:12 cm
Temp:15-26C
33-Sci: Procambarus spiculifer
Origin: USA
Max body size: 12cm+, there are several wild color morphs / local types
Keeping: You can keep 1 pair in an aquarium of 100cmx40cm. Bigger tanks allow for a greater number of individuals. A wide range of pH and GH is possible as long as one avoids the extremes. This species is not as tolerant to bad water quality as the more widely distributed Procambarus clarkii, allenii and acutus.
Behaviour: Rather shy and peaceful for its size. Does eat plants, but harm is limited. You would not have them for your planted tank, but having some green in their tank is possible.
How to tell apart males from females: As usual (longer pincers, gonopods in males, broader tail in females)
Breeding: As usual.
spread: common to rare
34-Procambarus toltecae
Origin: Mexico
Max body size: 8cm
Keeping: You can keep one pair in an aquarium of 60cmx30cm. Bigger tanks allow for a greater number of individuals. A wide range of pH and GH is possible as long as one avoids the extremes. Soft water and pH below 7 are not favorable. One can easily change those by adding crushed coral etc. This species is not as tolerant to bad water quality as the more widely distributed Procambarus clarkii, allenii and acutus.
Behaviour: like most crayfish these are omnivorous. However they are no great eaters and keeping them in a planted tank is possible, as long as one does not need a perfect tank and can live with the little damage they do.Intra-species aggression is not big, one can even raise most of the young ones in the adults' tank. They are weak in inter-species competition. Do not keep with other, stronger species.
How to tell apart males from females: Apart from the usual (longer pincers, gonopods in males, broader tail in females), males tend to be more colorful
Breeding: males first time change to form 1 with about 5cm. Mating like usual. Females will carry around 50 eggs of 2mm diameter, slightly larger than those of P. clarkii. After about 4 weeks, depending on temperature small crayfish of about 4mm hatch. Crayfish are brown / orangeish and begin to color up when reaching sexual maturity.
spread: extremely rare
35-Procambarus vasquezae :
Origin: Mexico
Max body size: 5cm, big pincers let them look like some Orconectes species.
Keeping: You can keep 3 pairs in an aquarium of 60cmx30cm. Bigger tanks allow for a greater number of individuals. A wide range of pH and GH is possible as long as one avoids the extremes. This species is not as tolerant to bad water quality as the more widely distributed Procambarus clarkii, allenii and acutus.
Behaviour: Total different from the usual Procambarus species. These crayfish can be compared to Cambarellus species. There is little to no intra-species aggression. They do not eat plants nor prey on their young
How to tell apart males from females: As usual (longer pincers, gonopods in males, broader tail in females)
Breeding: As usual. Big eggs compared to crayfish size.
spread: common
36-Procambarus versutus :
Origin: USA
Max body size: 7cm
Keeping: You can keep one pair in an aquarium of 60cmx30cm. Bigger tanks allow for a greater number of individuals. A wide range of pH and GH is possible as long as one avoids the extremes. Quite tolerant to a wide range of water conditions and quality.
Behaviour: like most crayfish these are omnivorous. However they are no great eaters and keeping them in a planted tank is possible, as long as one does not need a perfect tank and can live with the little damage they do.Intra-species aggression is not big, one can even raise most of the young ones in the adults' tank.
How to tell apart males from females: As usual (longer pincers, gonopods in males, broader tail in females)
Breeding: as usual
spread: rare
remark: get blue most easily. Does have something to do with diet I think. Color can change from brown to blue and back after each molt.
-Crayfish from Australia :
1- Sci:Cherax destructor
Common:Yabby
Origin:Australia
Size:20cm
Temp:22-24 C
2- German Name: Blue Black Australians
Scientific name: Cherax preissi
Synonym: preisii, preissii
Origin: Australia
Water parameters:
Temperature: 15 to 26 ° C
PH: 6.5 to 7.5
Water hardness: no demands on the water hardness
Size: 12-15cm
Very rare on the market. Great coloring! Previously always decried as "unsustainable" or "transport damaged" until someone the "mistakes" made and has kept in a brackish water aquarium ... where these animals were extremely stable and also very prolific after some time. So: Light brackish water is the key to success where.
How to Care for Your New Cherax lobster :
Origin : Australia
Maximum Size : Four or five inches plus claws -- really long claws
Longevity : Five years
Housing : Likes space but will hide under a log or in a burrow
Security: Hides during day. More active at night.
Temperature : Room temp fine. Breeds faster when warmer.
Sexual Maturity : Females mature sexually their first year. Males later.
BreedingYabbies breed September thru May (14 hours of daylight)
Attitude : Argumentative but shy burrower
Foods : Devours plants, flakes, and pelleted foods
Water : Prefers clean, hard water
ToughTolerates dry periods and salt in the water
US ThreatsHerons, bullfrogs, turtles, big fish, Cajuns, each other
OZ ThreatsCormorants, herons, kookaburras, ibises
Ideal Commercial Yabbie. C. destructors easily tolerate dry spells and salt in their water. During dry spells they burrow straight down to the water level and wait for the rains to return. Not all make it, but those that survive emerge with a desire to re-populate their new private pool. Females can breed as early as one year of age and produce several litters per season. The moms carry their eggs and baby yabbies under their tails -- just like our native crayfish. Babies grow quickly on detritus and whatever else they stumble across -- animal or vegetable. They're not picky eaters.
Molting. Yabbies grow by eating lots of food and sucking in lots of water. This cracks their shells open, They then wriggle out of their former armor and hide while their new larger exoskeleton hardens. Before they harden, they are extremely vulnerable. You can handle them easily at this stage. Other adult yabbies love to eat the tasty shell-less yabbies.
Last Words. Cherax lobsters or yabbies overpower other species when introduced into new areas. They out-reproduce and overpower their competition. Australia warns their fishermen not to release their unused bait into non-Cherax destructor waters. Some of their other species are evidently tastier and thus pricier by the pound. I know they certainly cost more in the hobby.
Handle your yabbie like any other pinching crayfish.
Providing a good hiding place increases survival rates.
Newly emerged yabbie protecting his formal shell.
3-Sci: cherax quadricarinatus
Common:Red Claw Crayfish
Origin:Australia
Size:40cm
Temp:22-25C
Redclaw Crayfish (Cherax quadricarinatus)
Alternative names:
Redclaw Crayfish, Blue Lobster, Australian Crayfish
Origin:
This species is native to freshwater creeks and water bodies in tropical Queensland, the Northern Territory and south-eastern Papua New Guinea. It has been widely translocated around the world, and is considered an invasive species. This species has established feral populations in South Africa, Mexico, Jamaica and Puerto Rico (Ahyong and Yeo 2007). This species has a distribution exceeding 3.5 million km2.
Sexing :
The adult male gets a distinctive red patch on the outside of his claws, this is absent on females. On the rare "blues" from Cherax Park, Au. the red stripe is replaced with a translucent white on the males. The male is also larger than the female, reaching a maximum of 25 cm in length and weight up to 600g.
Tank compatibility:
They are a bottom dweller and will eat anything they come across, as they are opportunistic eaters. It is not advisable to keep this species in the same aquarium as aquatic frogs or snails as these are easy prey for this species. If they can catch passing fish, these will also be eaten. Moreover, they can be very aggressive and will often attack smaller species of crayfish. Even fish that are too large for them to devour, will nevertheless face violence from them. Ideally they're best kept in single species tanks only. Plants will be uprooted & eaten. Sunken wood will also be consumed.
Diet:
Redclaw are omnivorous with a diet that includes small invertebrates and aquatic plants. They will act as a scavenger in the aquarium, eating any food that comes to rest on the bottom. Supplement their diet with a quality sinking pellet,flake food and dried algae. Gum tree bark is easily sunk, & will disappear quickly. Frozen peas are also a favorite. Being omnivorous,they also prey on other aquatic organisms. They will eat dying or dead fish. Brine shrimp, tubifex worms, and bloodworms will also work.
Feeding regime:
Feed once or twice a day - supplementing when necessary.
Environment Specifics:
In their native range, Redclaw inhabit a diversity of freshwater habitats including still ponds, small creeks, isolated rock pools and fast flowing rivers. Although native to tropical and subtropical bioregions, they can tolerate a broad temperature range, low dissolved oxygen concentrations and crowded conditions. Plenty of cover should be included in the aquarium, including both rocks and plants (Although the plants will not last long as the cray gets larger). After moulting the crayfish is vulnerable to attack and consumption by others.
If the exuvia (shed exoskeleton) is removed from the tank after shedding, the crayfish will likely die as this shed will be consumed for vital calcium. If your water has enough calcium in it this will not be an issue however.
Behaviour :
They do not burrow as much as other species. They will dig out under rocks & enlarge holes where possible. In their natural habitat, redclaw are a relatively non-aggressive, non-burrowing species. However, observation of introduced populations and within the aquarium trade, indicate that this species can display aggressiveness and burrowing habits. The females are territorial when with eggs. A larger aquarium will be needed if housing more than one. Provide at least 80 Litres (21.1 US G.) per Cray and include plenty of cover including both rocks and plants. Fights are common, often resulting in loss of limbs, especially as the water gets warmer.
Identification:
Generally they are blue to a blue/brown/green colour. Because of their selective breeding in the hobby, they will not change to their original colouration, except in times of stress or when feed or housed incorrectly. The blue colour seems to intensify when the water is clean, and be more green/brown when left in brackish water.
Redclaw Crayfish
Cherax quadricarinatus
Difficulty:Moderate
Min. Tank Size:75.7 Litres (20 US G.)
Size:17.8-20.3cm (7-8 ")
sg: Freshwater
pH:7.2 - 7.8
Temp.:12.8-35°C (55 -95 °F)
Water Hardness:10-50 °d
Stocking Ratio:1:1 M:F
Availability:Uncommon
Diet:Omnivore
Life Span:3-12 years
4- Sci:Cherax tenuimanus
Common:Marron
Origin:Western Australia
Size:40cm
Temp:22-24 C
Cherax tenuimanus, known as the hairy marron or Margaret River marron, is one of two species of crayfish in Southwestern Australia known as marron. It occupies a narrow range within the southwestern biogeographical region of Margaret River. It is currently listed as critically endangered on the IUCN Red List, because of the threat from the wider ranged smooth marron, Cherax cainii, which was introduced to its habitat
Scientific name:Cherax Cainii (formerly Cherax tenuimanus)
German Name:Marron
Origin / Geographical:southern Australia Gerald Town via Perth to Esperance
Description:Very large (!) Expectant animals with a final length of at least 30cm. . Final size: Approximately Hummer United
The natural coloring is brown-black; However beautiful blue variations are screened for the aquarium trade.
Sex differences:Sh. other Cherax species.
Life span:Appreciated: 10-15 years. In the aquarium, usually only a few months previously.
Water temperature:no higher than 20-24 C; Optimal is a temp. Of 15-20 C.
Tank size:Huge pools not under 1,50m Beck length, rather greater.
Beck means:Sand, stones; richly textured with Hide.
Comments:is since June 2002 out as Cherax Cainii !!!
Cherax tenuimanus is another way which is very similar in direct comparison Cherax Cainii looks but considerably more hairy.
(Chris Lukhaup)
Literature:sh. Also fighting dogs currently, 1-2, 2001. (article by Chris Lukhaup) ... or on www.crayfishworld.com
Also Check : http://www.wirbellose.de/
New Crayfish Species Found in Indonesia Named after Edward Snowden
A spectacular new species of freshwater crayfish, Cherax snowden, has been described from the Oinsok River Drainage, Sawiat District in the central part of the Kepala Burung Peninsula, West Papua, Indonesia, by Christian Lukhaup from the Humboldt University of Berlin and colleagues.
With its orange to greenishly orange motley tip, Cherax snowden has been long-confused with other members of the genus Cherax by the tradesmen who have been collecting them for ornamental purposes.
“The first specimens of Cherax snowden were exported from the city of Sorong, Indonesia as Cherax sp. in 2006,” Lukhaup and co-authors wrote in a paper published in the journal ZooKeys.
“Those crayfish have been captured by an unknown local collector from Kepala Burung for ornamental purposes in West Papua, Indonesia and imported to Aquarium Dietzenbach in Germany through Maju Aquarium in Jakarta.”
Although Cherax snowden has probably been sold under another name for years, the scientists figured that it is in fact easily distinguishable by its shape of body and coloration. In order to prove it as a separate species, they used sequence divergence as well.
Having traveled across the world from its so far only known locality, West Papua, New Guinea, the new species was given the name of the controversial former CIA employee Edward Snowden, who is famous for leaking secretive information from the U.S. National Security Agency.
“The new species is named after the American freedom fighter Edward Joseph Snowden. He is honored due to of his extraordinary achievements in defense of justice, and freedom,” the scientists wrote in the paper.
In their conclusion they note that there could be potential threats to Cherax snowden.
“As Cherax snowden is collected in large numbers for the global aquarium trade, as well as for food for the growing local population, the crayfish population will invariably be adversely impacted,” Lukhaup and co-authors wrote.
According to local collectors, the populations of the species have been decreasing in the last few years.”
“Clearly, the continued collecting of these crayfish for the trade is not a sustainable practice, and if the popularity of the species continues, a conservation management plan will have to be developed, potentially including a captive breeding program,” they concluded.
Mysterious beautiful blue crayfish is new species from Indonesia
Courtesy to : www.newscientist.com .
It has been one of the aquarium trade’s mystery stars. But although specimens of this colourful crayfish have been on sale since the early 2000s, no one was sure of its species name or where it came from.
Suppliers are secretive to stop others muscling in on their business, says Christian Lukhaup, an independent researcher from Germany. So he did his own detective work on the crayfish’s origins.
“It is like an investigation in a crime case,” Lukhaup says. “This is the only way to find out more.”
There were some clues. The crayfish looked like members of Cherax, a large genus occurring in New Guinea and Australia, and some dealers claimed they came from west part of New Guinea in Indonesia. So Lukhaup headed to the island’s West Papua province and asked local people if they had ever seen it. Eventually, he found specimens in a creek.
Detailed study revealed it was a new species. In honour of its appearance, he named it Cherax pulcher – pulchermeaning “beautiful” in Latin.
“It is a knockout. It is gorgeous,” says Zen Faulkes from the University of Texas-Pan American.
But he worries about the threats that the species is already facing. “We have got this beautiful species that people are harvesting for the pet trade, and it may be from this tiny location, and it could be wiped out before we know anything about them,” Faulkes says.
Real gone guy:
The human population in the area is growing fast and locals are also catching the crayfish for food, which adds to pressures of habitat loss and pollution, Lukhaup says.
Zachary Loughman from West Liberty University, West Virginia, shares these concerns. “It is only known from one site,” he says. “It may have a broad range, or might be limited to that one stream system. And if anything happens to that particular stream system in Indonesia, this guy is gone.”
Loughman says crayfish are one of the most imperilled animal groups on the planet.
When people picture endangered species, they picture pandas, tigers and whales, and they are certainly endangered, but very few people actually realise that roughly 50 per cent of the world’s crayfish are undergoing some form of imperilment,” Loughman says.
The two most common threats to crayfish are habitat degradation and the spread of invasive crayfish “Both of these issues are driven by man either destroying crayfish habitat, or introducing invasive crayfish outside their native range,” he says.
