Salutare, ca in tittlul topicului, am o dilema. Cum se pot deosebi Hemichromis lifalili de
Hemichromis bimaculatus? Care este diferenta intre cele doua specii?

Eu asta am gasit despre ele.

Hemichromis lifalili 
Maximum size in aquariums (min-max): 7 - 8 cm ( 2.76 - 3.15 in )
 pH of water: 6.5 - 7.5
 Water hardness (dGH): 8 - 18 °N
 Recommended water temperature: 22 - 24 °C ( 71.6 - 75.2 °F )
 Compatibility (temperament to it's family): aggressive (read this answer)
 Compatibility (temperament to other fish species): aggressive (read this answer)
 Place in the aquarium: Bottom levels
 The way of breeding: Spawning
 Fish origin: Africa

hemichromis bimaculatus

Origin
West African rivers

Maximum Size
Six inches theoretically -- four in real life

Longevity
10 years

Housing
10 okay but big tanks work better

Security
Females need cover at breeding time

Temperature
Prefers 75 to 82

Attitude
Stands up to larger cichlids. Not always the winner.

Sexing Difficult to distinguish discernible differences
Breeding Not that hard
Foods
Not picky

Water
Will live in old, yellow water. Prefers it cleaner.