Characteristic	Pigmentation	Motility	NaCl range (M)	NaCl optimum (M)		Minimum Mg2+	Temp range (°C)	Temp optimum (°C)	pH range	Generation time (hr)	Oxidase test			H2S formation from thiosulfate	Hydrolysis of Gelatin	Hydrolysis of Casein	Hydrolysis of Starch	Hydrolysis of Tween 80	Acid production on Mannose	Acid production on Galactose	Acid production on Xylose	Acid production on Sucrose	Rifampicin Resistant	Bactitracin Resistant	DNA G+C content (%mol)	DNA-DNA reassociation with SA5	DNA-DNA reassociation with PA12
SA5	red	rotating	1.7-5.1	2.6-3.4		0.2	30-55	53	7.0-9.0	0.53 (at 53°C)	±			-	+	+	+	+	-	-	-	+	+	+	61.4	100	30
PA12	pink-red	-	1.7-5.1	2.6-3.4		0.2	23-55	42-53	6.0-10	0.96 (at 48°C)	-			-	+	+	-	-	-	-	-	+	+	+	60.8	18	100
Hfx. Mediterranei	pink	+	1.3-4.7	2.9		0.02	25-45	35-37	ND	1.2	+			-	+	+	+	+	+	ND	+	+	-	-	60	20 (19)	14 (15)
Hfx. volcanii	red-orange	rotating	1.0-4.5	1.7-2.5		0.02	ND	45	ND	1.83	+			+	-	-	-	-	-	+	+	+	ND	ND	63.4	29 (18)	29 (17)
Hfx. Denitrificans	pink	+	1.8-5.1	4.3		ND	10.0-40.0	37	5.0-9.0	ND	+			+	-	-	-	+	ND	-	+	-	ND	ND	64.5	20 (27)	22 (16)
Hfx. Gibbonsii	orange-red	+	1.5-5.2	2.5-4.3		0.2	25-55	35-40	5.0-8.0	ND	+			+	+	+	-	+	+	+	+	+	-	-	61.8	25 (23)	30 (20)
Hfx. Sulfurifontis	salmon pink	-	1.0-5.2	2.1-2.6		0.001	18-50	32-37	4.5-9.0	ND	+			+	+	-	-	+	-	+	+	+	-	+	60.5	25 (33)	19 (21)
Hfx. Lucentense	Pink	+	1.8-5.1	4.3		ND	10.0-40.0	37	5.0-9	ND	+			+	-	-	-	+	ND	-	+	-	ND	ND	64.5	20 (27)	22 (16)
Hfx. Alexandrinus	Red	-	1.7-5.2	4.3		0.33	20-55	37	5.5-7.5	ND	+			+	+	-	-	+	-	-	+	+	+	-	59.5	24 (19)	24 (32)
Hfx. Prahovense	Beige- orange	-	2.5-5.2	3.5		ND	23-51	38-48	6.0-8.5	ND	+			+	-	-	+	+	ND	-	-	-	-	+	63.7	20 (25)	21 (15)
Hfx. Larsenii	Orange-red	+	1.0-4.8	2.2-3.4		0.005	25-55	42-45	6.0-8.5	ND	+			+	+	-	+	+	-	-	-	weakly +	-	-	62.2	22 (19)	24 (22)
Characteristic	Pigmentation	Motility	NaCl range (M)	NaCl optimum (M)		Minimum Mg2+	Temp range (°C)	Temp optimum (°C)	pH range	Generation time (hr)	Oxidase test			H2S formation from thiosulfate	Hydrolysis of Gelatin	Hydrolysis of Casein	Hydrolysis of Starch	Hydrolysis of Tween 80	Acid production on Mannose	Acid production on Galactose	Acid production on Xylose	Acid production on Sucrose	Rifampicin Resistant	Bactitracin Resistant	DNA G+C content (%mol)	DNA-DNA reassociation with SA5	DNA-DNA reassociation with PA12
SA5	red	rotating	1.7-5.1	2.6-3.4		0.2	30-55	53	7.0-9.0	0.53 (at 53°C)	±			-	+	+	+	+	-	-	-	+	+	+	61.4	100	30
PA12	pink-red	-	1.7-5.1	2.6-3.4		0.2	23-55	42-53	6.0-10	0.96 (at 48°C)	-			-	+	+	-	-	-	-	-	+	+	+	60.8	18	100
Hfx. Mediterranei	pink	+	1.3-4.7	2.9		0.02	25-45	35-37	ND	1.2	+			-	+	+	+	+	+	ND	+	+	-	-	60	20 (19)	14 (15)
Hfx. volcanii	red-orange	rotating	1.0-4.5	1.7-2.5		0.02	ND	45	ND	1.83	+			+	-	-	-	-	-	+	+	+	ND	ND	63.4	29 (18)	29 (17)
Hfx. Denitrificans	pink	+	1.8-5.1	4.3		ND	10.0-40.0	37	5.0-9.0	ND	+			+	-	-	-	+	ND	-	+	-	ND	ND	64.5	20 (27)	22 (16)
Hfx. Gibbonsii	orange-red	+	1.5-5.2	2.5-4.3		0.2	25-55	35-40	5.0-8.0	ND	+			+	+	+	-	+	+	+	+	+	-	-	61.8	25 (23)	30 (20)
Hfx. Sulfurifontis	salmon pink	-	1.0-5.2	2.1-2.6		0.001	18-50	32-37	4.5-9.0	ND	+			+	+	-	-	+	-	+	+	+	-	+	60.5	25 (33)	19 (21)
Hfx. Lucentense	Pink	+	1.8-5.1	4.3		ND	10.0-40.0	37	5.0-9	ND	+			+	-	-	-	+	ND	-	+	-	ND	ND	64.5	20 (27)	22 (16)
Hfx. Alexandrinus	Red	-	1.7-5.2	4.3		0.33	20-55	37	5.5-7.5	ND	+			+	+	-	-	+	-	-	+	+	+	-	59.5	24 (19)	24 (32)
Hfx. Prahovense	Beige- orange	-	2.5-5.2	3.5		ND	23-51	38-48	6.0-8.5	ND	+			+	-	-	+	+	ND	-	-	-	-	+	63.7	20 (25)	21 (15)
Hfx. Larsenii	Orange-red	+	1.0-4.8	2.2-3.4		0.005	25-55	42-45	6.0-8.5	ND	+			+	+	-	+	+	-	-	-	weakly +	-	-	62.2	22 (19)	24 (22)