You must provide us with slide explains a microscopic features of the fungus. It is difficult to recognize it from the plate only . please kindly prepare a slide and send it .
You need to give us more information. Where was the fungus isolated? What media does it grow on? Have you tested which carbon sources it can utilise? Please provide more information to aid the identification.
Most importantly, provide microscope photos, preferably both unstained and stained with methylene blue at 400x magnification. Photos of the conidia/spores are the most important.
It is impossible to get accurate identification for this fungus without microscopic preparations, since many fungi give similar morphological characteristics. Also, it is necessary to mention the sources of isolation, whether you got it from infected plant (parts), soil, any other sources. Good luck
According to the picture it could be Aspergillus niger, but I suggest you to make a squash and observe if it has conidiophorus, if it has “esterigmas” in double series and if it also has dark conidia espinescentes, then it could be the genus Aspergillus, but could be another one with dark mycelium from Dematiaceous fungus family.