The Mesomycetozoea (or DRIP clade, or Ichthyosporea) are a small group of protists, mostly parasites of fish and other animals. Significance They aren't particularly distinctive morphologically, appearing in host tissues as enlarged spheres or ovals containing spores, and most were originally classified in various groups of fungi, protozoa, and algae. However, they form a coherent group on molecular trees, closely related to both animals and fungi and so of interest to biologists studying their… (More on Mesomycetozoea)