The ciliated protozoo Coleps, a frequent aquaria resident, is able to kill and eat zebrafish larvae.

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By Ms. Isabella Benvenuto , Dr. Daniel Rodriguez-Ithurralde
Corresponding Author Dr. Daniel Rodriguez-Ithurralde
Molecular Neuroscience, Instituto Clemente Estable (IIBCE), - Uruguay 11600
Submitting Author Ms. Isabella Benvenuto

Published on: 11-Mar-2011 10:28:45 PM GMT    Views: 7635



Coleps are common freshwater ciliated Prostomatea with barrel-shaped bodies, usually less than 100 micrometers long. They prey on a variety of aquatic organisms, including fish eggs and larva. Here we are showing them voraciously feeding from a dead zebrafish embryo. With its sharp teeth and its rapid revolution, they are able to kill and eat baby (4-7 day old) zebrafish (Mazanec, A. & Trevarrow, B., 1998). We found that they can make quickly disappear entire baby zebrafish stocks.

Mazanec, A. & Trevarrow, B., 1998, Zebrafish Sci. Monitor, Vol. 5.1., Scourge of the Baby Zebrafish

Source(s) of Funding

We are indebted to PEDECIBA (Biología) for its continued support to DRI.

Competing Interests

We have no competing interests.

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