What is called: "Dwarf galaxies" (warm yellow spots) should be part of the exploded string big bang Black Hole, forming equal sized BH Herbig Haro systems with star formation in between.
see below Figure 4: cosmological simulation of a filament made up of hundreds of thousands of small galaxies. The image on the left shows the emissions produced by all the galaxies as it might be observed in situ. The image on the right shows the filament as it would be seen by MUSE. Even with a very long exposure time, the vast majority of the galaxies cannot be detected individually. However, the light from all these small galaxies is detected as a diffuse background, rather like the Milky
Way when seen with the naked eye.
© Thibault Garel and Roland Bacon
see: https://www.cnrs.fr/en/first-images-cosmic-web-reveal-myriad-unsuspected-dwarf-galaxies