A new digenetic trematode Paradiscogaster mannari n. sp. (Faustulidae) from the emperor angel fish Pomacanthus imperator from Gulf of Mannar, India

  • Ramesh Kumar Palsamy
  • Saravanan Raju
  • Nandiath Karayi Sanil
  • Madhavi RokkamEmail author
Original Article


Paradiscogaster mannari n. sp. is described from the emperor angel fish Pomacanthus imperator collected from Gulf of Mannar and maintained in the marine aquarium at CMFRI, Mandapam, India. The new species differs from other species of the genus mainly in the shape of the body, the distribution of vitelline follicles entirely in the forebody on either side of cirrus sac and in the location of testes close to posterior end of body. The various species of Paradiscogaster so far recorded is listed together with information on the hosts and geographic distribution for each species. This constitutes the first report of a digenean from the emperor angel fish.


Paradiscogaster mannari n. sp. Faustulidae Pomacanthus imperator Angel fish Gulf of Mannar 



The authors would like to thank Director, Central Marine Fisheries Research Institute Cochin, for providing facilities to carry out the analysis part. Thanks are also due to Dr B. Sailaja, Department of Zoology, Andhra University, for her kind help in the preparation of the figure.

Authors contributions

PRK Collection of parasites, preparation of slides, writing the script RS preparation of drawings, SNK Collection and identification of fish RM review of the article


No funding was received for this project from any agency.

Complianec with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All applicable institutional, national and international guidelines for the care and use of animals were followed.


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Copyright information

© Indian Society for Parasitology 2019

Authors and Affiliations

  • Ramesh Kumar Palsamy
    • 1
  • Saravanan Raju
    • 1
  • Nandiath Karayi Sanil
    • 2
  • Madhavi Rokkam
    • 3
    Email author
  1. 1.Mandapam Regional Centre of ICAR-CMFRIMandapam CampIndia
  2. 2.Division of Marine Biotechnology CMFRIKochiIndia
  3. 3.Department of ZoologyAndhra UniversityVisakhapatnamIndia

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