| rcatfish_classification | Access the Eschmeyer's Catalog of Fishes Classification |
| rcatfish_collections | Accesses the Eschmeyer's Catalog of Fishes Guide to Fish Collections |
| rcatfish_glossary | Access the Eschmeyer's Catalog of Fishes Glossary |
| rcatfish_journals | Search for journals in the Catalog of Fishes |
| rcatfish_references | Search for references in Eschmeyer's Catalog of Fishes |
| rcatfish_search | Search for genera and species in the Eschmeyer's Catalog of Fishes |
| rcatfish_species_by | Find number of available fish names, number of valid species, and number of descriptions in the last 10 years by family or subfamily |
| rcatfish_updates | Access catalog changes and additions |
| rcatfish_version | Retrieve the current version Number of the Eschmeyer's Catalog of Fishes Being Used |