Common Name(s)
German Blue, German Blue Ram (GBR), Ram, Butterfly cichlid, Dwarf cichlid. Ramirezi's cichlid
Scientific Name
Mikrogeophagus ramirezi
Rivers of Colombia and Venezuela.
Peaceful, but when breeding, the male guards the eggs and can be very aggressive.
Maximum Size
It will reach about 2 inches (5 cm) in length in the aquarium, though natural specimens can attain a length of about 2 3/4" (7 cm).
Minimum Tank Size
15/20 gallon with minimum base dimensions of 24 x 12
Tank Setup
They prefer slow to moderate moving water along with good efficient filtration. A mature tank with a pH of acidic to neutral water is best. Keep track of nitrates. Also, oxygen levels must be maintained for best color and health. The aquarium should have a cover and low to moderate lighting.
Tank Region
Omnivorous, will accept a wide range of foods, but live foods are best.
The eggs are laid on a pre-cleaned area like a flat stone or a depression. The female can lay up to 200 eggs. The eggs hatch in between 3-4 days.
Peaceful tankmates such as the Black Phantom Tetra, Glowlight Tetra, Cardinal Tetra, and the Neon Tetra.
Ease of Keeping
pH: 6.0-7.5, Temperature-78.0 to 85.0° F (25.6 to 29.4° C); Substrate Type- Sand is preferred, but gravel is fine.

By Aquakeeper14 - Own work, CC BY-SA 4.0,

An adult female is stockier and has a more round edging with a pinkish tint on the belly.Whereas the males dorsal and anal fins have more pointed edge, their tails have a V shape, are more sharp edged and they have an elongated 2nd ray in their dorsal fins.