 The study aimed to characterize and investigate the biotic activity of colototrachem cocodes, walr, hues, a casual agent of anthracnose roots pepper in southeastern Poland, isolated from sweet pepper cultivated fields during 2007 to 2012. Five randomly chosen isolates and one reference isolate were studied using morphological characterization, light and scanning electron microscopy, and biotic activity testing on PDA with seven species of test fungi. The results showed that C. cocodes is a weak competitor in the rhizosphere of sweet pepper, and its development may be limited by numerous antagonists. This article was authored by Agnieszka Jamiolkowska, Barbara Skorilo Bednartz, and Elzbietopak Kowska.