part of part of fin bone dermal bone caudal-fin stay UBERON:2001700 Development of caudal fin stays appears uncertain according to several authors (e.g., Zanata and Vari 2005, Vari 1995). caudal fin stay This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon Dermal bone that is located anterior to the caudal fin procurrent rays. Caudal fin stays are unpaired median bones. caudal fin skeleton