Caridina mariae

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Caridina mariae
Caridina cantonensis sp "blue".JPG
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Caridea
Family: Atyidae
Genus: Caridina
Species:
C. mariae
Binomial name
Caridina mariae
Klotz & von Rintelen, 2014 [1]

Caridina mariae, commonly known as the tiger shrimp, is a variety of freshwater shrimp from Southeast Asia (neighboring counties of Yingde and Conghua, Guangdong Province, Southern China and Hong Kong SAR [1] ) that are popular in hobby aquariums. The natural coloration of the shrimp isa semitransparent body, with dark brown to black blotches on the carapace, and dark brown to black "tiger" stripes along the posterior part of the carapace and along the first six abdominal segments. Variations of the species may also have orange eyes, and orange highlights in the tail fins. There is also a lack of dark markings on the tail fan [2]

Contents

The name C. mariae was given in honor of the first author's wife, Maria, for "her support during several field trips and her abundant patience when the first author is spending most evenings behind the microscope". [2]

At full size, these shrimp reach about 1–1.5 in (25–38 mm) in length, with females of the species being larger than the males, and having a curved underbelly. They prefer very clean, soft water with a pH of 6-7.5 (preferring a pH of about 6.5), and a temperature of 65–75 °F (18–24 °C). [3]

Caridina mariae are peaceful, non-aggressive omnivores, and live for 1–2 years.[ citation needed ]

Breeding

A female Caridina mariae with eggs carried within her swimmerets Female Caridina cantonensis sp "blue" with eggs.JPG
A female Caridina mariae with eggs carried within her swimmerets

Caridina mariae is a complex breeder which exhibits direct larval development and has only one larval stage before becoming juvenile. Their larval stage is well-developed and resembles the adult with functional walking pereiopods and swimming pleopods. The larval stage does not feed and can be classified as lecithotrophic. [4]

Larvae are born not more than 3 mm (0.12 in) in length, and grow to full size through molting. [4] The gestation period is about 30 days. Caution must be taken with filtration when the young when they are in an aquarium, as they can be pulled into the intake.

The young of this species will resemble adult tiger shrimp, with blue, orange, or yellow coloration, when applicable, becoming darker and more intense as the young mature.


Taxonomy

C. mariae was described in a 2014 paper by Werner Klotz and Thomas Von Rintlen, [4] in which the species was recovered as sister to C. cantonensis and C. logemanni (also described in that paper).

A 2020 phylogenetic analysis conducted by Chen, Chen, and Guo (which did not consider C. logemanni ) likewise found Caridina mariae to be sister to C. cantonensis. [5] The tree below is summarized from the analysis of Chen, Chen, and Guo:

C. huananensis

The shedded molting of a Caridina mariae, with an adult standing nearby Shedded molting of a Caridina cantonensis sp "blue".JPG
The shedded molting of a Caridina mariae, with an adult standing nearby

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References

  1. 1 2 WoRMS. "Caridina mariae Klotz & von Rintelen, 2014". World Register of Marine Species . Retrieved 15 March 2024.
  2. 1 2 "New shrimp from Hong Kong and southern China". Seriously Fish. Retrieved 15 March 2024.
  3. "Blue tiger shrimp (Caridina mariae Blue Tiger)". Shrimp Farm University. Retrieved 15 March 2024.
  4. 1 2 3 Klotz, Werner; Von Rintlen, Thomas (2014). "To "bee" or not to be—on some ornamental shrimp from Guangdong Province, Southern China and Hong Kong SAR, with descriptions of three new species". Zootaxa. 3889 (2): 151–184. doi:10.11646/ZOOTAXA.3889.2.1. PMID   25544138.
  5. Chen, Qing-Hua; Chen, Wen-Jian; Guo, Zhao-Liang (2020). "Two freshwater shrimp species of the genus Caridina (Decapoda, Caridea, Atyidae) from Dawanshan Island, Guangdong, China, with the description of a new species". ZooKeys (923): 15–32. Bibcode:2020ZooK..923...15C. doi: 10.3897/zookeys.923.48593 . PMC   7142168 . PMID   32292268.