Streptococcal Infections of Fish

Roy P. E. Yanong and Ruth Francis-Floyd

Release Date: 3/10/2024

DOI: 10.32473/edis-fa057-2002

Agriculture

Abstract

Streptococcus is a genus of bacteria that includes some species that cause serious diseases in a number of different hosts. A major identifying feature of Streptococcus is that they are Gram-positive (they appear purple/blue when stained using a procedure called a Gram stain). By contrast, most of the common disease-causing bacteria of fish are Gram-negative (appear pink with a Gram stain). This is important when considering treatment options and will be discussed in greater detail below. First published Feb. 2002.

About this Publication

This document is Circular 57, one of a series of the School of Forest, Fisheries, and Geomatics Sciences, Program in Fisheries and Aquatic, UF/IFAS Extension. Original publication date April 2002. Revised August 2006 and February 2024. Visit the EDIS website at https://edis.ifas.ufl.edu for the currently supported version of this publication.

About the Authors

Roy P. E. Yanong, professor, Tropical Aquaculture Laboratory, School of Forest, Fisheries, and Geomatics Sciences, Program in Fisheries and Aquatic; and Ruth Francis-Floyd, professor, Department of Large Animal Clinical Sciences (College of Veterinary Medicine) and School of Forest, Fisheries, and Geomatics Sciences, Program in Fisheries and Aquatic; UF/IFAS Extension, Gainesville, FL 32611.

Authors

Roy P. Yanong

Contact

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University of Florida

professor and Extension veterinarian, School of Forest, Fisheries, and Geomatics Sciences, Fisheries and Aquatic Sciences Program, UF/IFAS Extension Tropical Aquaculture Lab, Ruskin, FL

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Ruth Francis-Floyd