Aquatic Ecology Do fish eat biofilm? February 5, 2026 by Tanp | Leave a Comment Fish can indeed eat biofilm, which is a natural part of their diet in many aquatic environments. Biofilm consists of a community of microorganisms, such as bacteria and algae, that form a slimy layer on surfaces submerged in water. Certain fish species actively graze on biofilm as a source of nutrition. What is Biofilm and […] Read more ยป