German blue ram

Water parameters

Tolerated range for this species. Aim for the middle of each band rather than the extremes.

Tank and habitat

Substrate: fine.

Behavior

Plant interaction: plant safe.

Feeding

Omnivore with a preference for frozen and live food. Frozen bloodworm, daphnia, brine shrimp, and mysis shrimp should make up the bulk of the diet. Accepts quality pellets and flake but colors are noticeably better on frozen food. Small feedings 2-3 times daily. Rams pick at food deliberately rather than gulping, and may struggle to compete with faster tankmates at feeding time. Bottom-to-midwater feeder.

Compatibility

• Peaceful dwarf cichlid that works in community tanks with non-aggressive fish. Not a bulldozer like larger cichlids.
• Good tankmates: tetras (especially rummynose and cardinal), corydoras, pencilfish, otocinclus, small rasboras.
• Males are territorial during breeding but the territory is small (a 30 cm radius around the chosen spawning site). They display at intruders rather than inflicting damage.
• Do not keep with other rams in a small tank; a pair needs at least 80 L to themselves. Two males in a 60 L tank will result in one being constantly stressed.
• Not suitable for a community tank with boisterous fish (barbs, danios) or competitive feeders.

Origin and habitat

Mikrogeophagus ramirezi is a dwarf cichlid from the Orinoco basin, specifically the llanos, the broad seasonally flooded savanna that stretches across the lowlands of Venezuela and Colombia. Myers and Harry described it in 1948, originally placing it in Apistogramma; over the years it has also been listed under Papiliochromis before settling in Mikrogeophagus, a genus name that translates roughly as small earth-eater. The species name honours Manuel Vicente Ramirez, tied to the first specimens, and the fish was already moving through the trade as ramirezi before it was formally named. The German blue label refers to a line developed in Germany for stronger colour, and the trade now offers many farmed morphs, including gold, electric blue, black, balloon, and long-finned forms, most produced in Asia. It is a small fish, around 5 cm and up to about 7, and it needs warm water; that high temperature requirement, near 27 to 30 C, is its biggest compatibility hurdle, since many standard community fish do better in cooler tanks.

Breeding

An open substrate spawner that forms monogamous pairs. The pair cleans a flat site, a rock, a broad leaf, or the glass, and the female lays a clutch of up to roughly two hundred eggs while the male fertilises them. Both parents guard and fan the eggs, then tend the fry once they hatch a few days later. First foods are infusoria or a liquid fry food, moving on to baby brine shrimp. Farm-bred rams are often unreliable parents and tend to eat their first few clutches before settling into the job, so early failures are normal.

Common problems

Water quality is the heart of ram care. They have little tolerance for ammonia, nitrite, or high nitrate and do best in a mature, stable tank kept warm, around 27 to 30 C. Held at ordinary community temperatures in the low to mid twenties, they tend to fade and die early. The bigger background problem is stock quality: most rams come from large Asian fish farms, and much of that stock is less hardy and shorter-lived than fish from careful breeders, so buying from a local or specialist source improves the odds. New arrivals often carry ich or pick up bacterial infections after the stress of transport.

Bioload

Further reading

• Why your angelfish ate your neons
• Stocking ideas by tank size