any unpaired median fin situated on the undersurface of fishes and some other aquatic vertebrates
Examples of 'ventral fin' in a sentence
ventral fin
Translucent light brown small fins, dorsal fin with scattered spots, ventral fin without dark pigments.
Susy Segura-Solís, Federico Bolaños 2009, 'Desarrollo embrionario y larva del sapo Incilius aucoinae (Bufonidae) en Golfito,Costa Rica', Revista de Biología Tropicalhttp://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442009000500026. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)