Letter to Editor.

Schmidt (2020) described three cases of tracer injection in a puffer fish. One, which he claims to be a nucleus corticalis injection and two cases of tectal injections. These three cases are part of a larger set of tracer injections in the puffer fish that are all contained in two slide boxes. All injections weremade by amember of my lab.Mr. Schmidt was not involved in the production of these cases. He only took photographs and used them without authorization. The original sections are still in my slide collection. In his paper, Schmidt selected two cases of tectum injection although there are eight tectal cases in total available. There are no cases of injections into the nucleus corticalis, the case Mr. Schmidt claims to be a nucleus corticalis injection is an injection into the rostro-dorsol tegmentum. The selection of only three cases and mislabeling one is bad enough. But he also reports only on labeled nucleus corticalis cells and their processes, and conceals a large number of other structures that are also labeled in the three cases. Considering all structures labeled, his conclusion would not be justified. I will describe the three cases used by Mr. Schmidt in more detail and then mention some other cases that are very relevant and were available to Mr. Schmidt, but were neglected by him.