I am trying to integrate zebrafish and mouse genome using Seurat v3. I am getting an error while running the anchoring step (FindIntegrationAnchors). I have the orthologous table between the two species obtained from biomart however I don't understand at what step should I upload it to reannotate the genes in order to get common features? Both species samples were processed separately following https://satijalab.org/seurat/archive/v3.2/pbmc3k_tutorial.html and for integration https://satijalab.org/seurat/archive/v3.2/integration.html I am not an expert on this perhaps I am missing something usual. Any suggestions would be highly appreciated.