Camallanus cotti




Rev 06/02/2022

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
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Camallanus cotti Fujita, 1927
Parasites of freshwater fish, especially guppies and aquarium fish.
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Morphology and Anatomy:



Ref Rigby et al., 1997

Anterior of female of Camallanus cotti, ventral view, showing sclerotized ridges of buccal capsule and muscular and gandular regions of esophagus.
photo from Menezes et al (2006).



Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Type locality Lake Biwa, Japan. Distributed throughout the world, probably with the distribution of aquarium fish.

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Intestinal parasite of freshwater fish, expecialluy guppies, Poecilia reticulata.  Feeding causes intestinal lesions and abdominal swelling and erosion of the mucosa of the rectum; there may be reddish-colored nematodes protruding from the anus of the fish (Menezes et al., 2006).


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Biology and Ecology:

Have low host specificity so easily transferred to native fish whann disoerswed with aquarium specimens.

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Life Cycle:


Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters
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Ecosystem Functions and Services:


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Menezes, R.C., Tortelly, R., Tortelly-Neto, R., Noronha, D., Pinto, R.M. 2006. Camallanus cotti Fujita, 1927 (Nematoda, Camallanoidea) in ornamental aquarium fishes: pathology and morphology. Mem. Inst. Oswaldo Cruz. 101:683-687.

Rigby, M.C., Font, W.F., Deardorff, T.L. 1997. Redescription of Camallanus cotti Fujita, 1927 (Nematoda: Camallanidae) from Hawaii. J. Parasitology 83:1161-1164.

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Copyright 1999 by Howard Ferris.
Revised: June 02, 2022.