German blue ram care

Mikrogeophagus ramirezi · Orinoco basin savanna rivers, Venezuela and Colombia

German blue ram (Mikrogeophagus ramirezi)
Photo: Eric Mengel, Public domain, via Wikimedia Commons

Rams are small, peaceful dwarf cichlids that need warm (78 to 85 °F), soft, clean water in a mature 20 gallon or larger tank with sand and plants.

Tank size
20 US gal or larger
Temperature
78 to 85 °F (26 to 29 °C)
Group size
Alone or in a pair
Temperament
Peaceful
Adult size
3 in
pH
5 to 7
Hardness (GH)
1 to 6 dGH
Lifespan
2 to 4 years
Diet
Omnivore
Care level
Demanding
Check it in the stocking checker →

In a 20 gallon long

30¼ × 12½ × 12¾ in outside
Drawn to scale: one German blue ram at adult size (3 in) in the smallest listed tank that suits them. Choose your tank on the home page to see them in it.

How to keep German blue rams

Rams are small, peaceful dwarf cichlids that need warm (78 to 85 °F), soft, clean water in a mature 20 gallon or larger tank with sand and plants. Keep one, or a pair, with calm tetras or rasboras. They are not a fish for a brand-new tank.

Diet: Omnivore: small pellets, frozen bloodworm and brine shrimp. Fish food types compared · how often to feed.

Where they swim: Bottom of the tank.

German blue ram tank mates

Share the temperature and water, and neither side eats, nips or bullies the other. Check the full group in the stocking checker.

Keep apart

What a German blue ram tank needs

A tank of 20 US gallons or more (such as the 20 gallon long) with a cover, and the equipment below.

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Aqueon PRO QuietFlow Power Filter 10

Rated by the maker for up to 20 US gal, which covers a 20 gallon German blue ram tank without being built for a far bigger one.

Aqueon QuietFlow Internal Power Filter 15–30 gal

Rated by the maker for 15–30 US gal, which covers a 20 gallon German blue ram tank without being built for a far bigger one.

hygger Precise Aquarium Heater 100W

German blue rams need 78 to 85 °F; most homes run cooler, so a heater holds the temperature.

API Freshwater Master Test Kit

Tests ammonia, nitrite, nitrate and pH, the readings that matter most before and after adding German blue rams.

Seachem Prime 100 mL

Removes chlorine and chloramine from tap water at every water change.

Fluval Edge Thermometer

Shows the water temperature at a glance, so you know it stays within 78 to 85 °F.

More choices, each with the reason it is in or out: Filters for a 20 gallon tank · Heaters for a 20 gallon tank. We don’t list fish food: any good brand of the foods under Diet will do. Plan the whole tank's equipment →

Common German blue ram problems

Test the water first whenever fish look unwell: see what your readings mean, then match the symptom. For disease, a vet who treats fish can diagnose it and advise treatment.

More to compare

Sources

Name, origin and adult size checked against Wikipedia: Mikrogeophagus ramirezi. Temperature, pH, hardness, group size, lifespan and minimum tank size are common hobby guidance, not figures from that article. Ranges are the range the species tolerates; aim for the middle. Minimum tank sizes are for an adult group. Drawings are our own; photo credits follow.

Photo credits

Real photographs from Wikimedia Commons, resized and cropped to fit; each is used under the license named.