Aeromonas fluvialis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Aeromonadales, Family Aeromonadaceae, Genus Aeromonas,
Aeromonas fluvialis  
Alperi et al. 2010.
Gram-negative, straight rod, nonspore-forming, nonencapsulated, 0.6-0.7 x 3-3.5 µm.
Motile by one polar flagellum.
Colonies on TSA are 4-5 mm in diameter, opaque, circular and beige in colour after
48 hours at 30 ºC. No hemolysis is produced on sheep blood agar at 30 ºC. No brown
diffusible pigment is produced. Optimal growth occurs at 30 ºC after 24 h in TSB.
Grows at 37 ºC but not at 4 ºC or 40 ºC on TSA. Grows on MacConkey agar and on
TSB without NaCl but not with 6% NaCl. Optimal growth at pH 9 after 24 hours on TSB
but no growth at pH 4.
Isolated from water of the Muga river, Girona, Spain. Resistant to vibriostatic agent O/129, amoxycillin, amoxycillin + clavulanic acid
and ticarcillin.
Undetermined.
  1. Anabel Alperi, Antonio J. Martínez-Murcia, Arturo Monera, Maria J. Saavedra, and Maria J. Figueras. Aeromonas fluvialis sp. nov.,
    isolated from a Spanish river. Int J Syst Evol Microbiol January 2010 60:72-77.
Positive results for oxidase, catalase, nitrates reduction, indole production, beta-
galactosidase, citrate utilization, acid production from:  N-acetylglucosamine,
cellobiose, D-fructose, glycogen, glycerol, D-galactose, D-glucose (with gas production), lactose, maltose, D-mannose, D-ribose,
sucrose, starch, salicin & trehalose.

Negative results for H
2S production from cysteine, Voges-Proskauer test, aesculin hydrolysis, gelatin hydrolysis, elastin hydrolysis,
DN-ase, urease or L-tryptophan deaminase, arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, acid production
from: erythritol, L- or D-arabinose, D-adonitol, amygdalin, arbutin, L- or D-arabitol, dulcitol, esculin, L- or D-fucose, inositol, inulin,2- or
5-ketogluconate, D-lyxose, D-mannitol, methyl alpha-D-mannopyranoside, methyl alpha-D-glucopyranoside, melibiose,  melezitose,
raffinose, L-rhamnose, L-sorbose, D-sorbitol, turanose, D-tagatose, methyl beta-D-xylopyranoside, xylitol, L- or D-xylose.
(c) Costin Stoica
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