Glossary

gram-negative

Of, relating to, or being a bacterium that does not retain the crystal violet dye used in Gram's method of staining.

Related terms

Aeromonas
A genus of rod-shaped, gram-negative bacteria found in fresh and salt water, soil, and sewage. Various species affect fishes while others are pathogenic to amphibians, reptiles, and higher animals including humans.
baytril
Fluoroquinolone antibiotic effective against many aerobic bacteria, but particularly gram-negative and mycoplasma forms. Produced and marketed for veterinary use and used to treat fishes in some cases.
Furan-2
Branded, broad spectrum antibiotic used to treat both gram-negative and gram-postive bacterial infections in aquarium fishes. Contains the active ingredients Nitrofurazone and Furazolidone.
Gram's method
Method of differentiating bacterial species into groups based on the structure of their cell walls, using a particular, violet-coloured, staining technique.
Maracyn-2
Broad spectrum antibiotic with the active ingredient minocycline. Used to treat internal and external gram-negative bacterial infections.
oxytetracycline
Broad spectrum antibiotic used to treat both gram-negative and gram-positive bacterial infections.