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Scientific Name: Leydigia acanthocercoides (Fischer, 1854)
English Name: Water Flea
Local/Bangla Name: Pani Poka (পানি পোকা)
Zooplankton : Leydigia acanthocercoides

Photo: Ivan Sinkov (iNaturalist)

Classification:
Kingdom: Animalia
Phylum: Arthropoda
Class: Branchiopoda
Order: Anomopoda
Family: Chydoridae
Description:
The female of this species has a roughly oblong and compressed body, with both the valves and head displaying longitudinal lines parallel to the anterior margin. The head shield features fine striations and intervals between these lines, with a rounded posterior edge. There are three main head pores, with lateral pores positioned close to the central pore. The rostrum is short, blunt, and directed forwards. The labrum has setae along its anterior margin, and the eye is smaller than the ocellus. The postabdomen is rounded and concave, with several rows of setae on the lateral part of the anus and small anal spines. The claw lacks a basal spine. The length of the female ranges from 0.72 to 0.84 mm. The male is smaller than the female, with distinct longitudinal lines on the valves. The antennules almost reach the apex of the rostrum, and the labrum has pubescent anterior margins. Setae are present on the anal margin. The vas deferens opens at the apex of a penis-like process. Similar to the female, the eye is smaller than the ocellus. The length of the male ranges from 0.20 to 0.50 mm. Both sexes reproduce through parthenogenesis. The parthenogenetic female progresses through multiple adult stages and produces batches of eggs, which are then incubated in the mother’s brood pouch. The young are subsequently released as juveniles.
Habitat & Distribution in Bangladesh:
Commonly found in rivers in Bangladesh, such as the Halda River.
Environment:
Freshwater, Brackish
Main References:

Ahmed ATA, Kabir SMH, Ahmad M, Rahman AKA, Haque EU, Ahmed ZU, Begum ZNT, Hassan MA, Khondker M (eds.) (2008) Encyclopedia of Flora and Fauna of Bangladesh, Vol. 18. Part II. Arthropoda: Crustacea. Asiatic Society of Bangladesh, Dhaka, 226 pp

DNA Barcodes from Bangladesh
GenBank Accession Number:
Other DNA Barcodes & Nucleutide Sequences
Global IUCN conservation status:
Other Information