Hi 

I read this paper:

In-vitro predatory activity of nematophagous fungi from Costa Rica with potential use for controlling sheep and goat parasitic nematodes

http://www.scielo.sa.cr/scielo.php?pid=S0034-77442011000100004&script=sci_arttext&tlng=e

They also use malt extract agar (MEA) and potato carrot agar (PCA)

Regards

We have isolated many fungi from soil,avian excreta,milk,skin etc., on Pal sunflower seed medium,and APRM agar,which were developed by us in 1980,and 2015,respectively.These are very cheap medium for the recovery of fungi from environmental and clinical samples.You can download our many papers on fungal infections from Research Gate.

Dear Colleague, 

An interesting article comparing different methods for isolation of both endoparasitic and predaceous nematophagous fungi was published in Microbial Ecology 4:157-163 (http://link.springer.com/article/10.1007%2FBF02014285). 

Methods for isolation of nematophagous fungi were also described by C. Drechsler, who worked extensively on "carnivorous" fungi:

Drechsler, Charles (1937): Some hyphomycetes that prey on free-living terricolous nematodes. Mycologia 29, 447-552

Drechsler, Charles (1941): Some hyphomycetes parasitic on free-living terricolous nematodes. Phytopathology 31 (9), 773-801 

Drechsler's papers can be viewed for free in Cyberliber: http://www.cybertruffle.org.uk/cyberliber/

I hope this information helps in your studies. 

Success! 

Hugo