Electric Blue Balloon Ram (Mikrogeophagus ramirezi)

Meet the Electric Blue Balloon Ram

The Electric Blue Balloon Ram (Mikrogeophagus ramirezi) is an ornamental dwarf cichlid in the family Cichlidae. The underlying species is native to the Orinoco River basin in the llanos of Venezuela and Colombia. FishBase records a maximum of 4.2 cm standard length, so plan its aquarium around a small adult fish that still needs carefully controlled water and a useful floor area.

This form suits a keeper prepared to maintain warm, clean, stable conditions and to screen every companion carefully. It is a poor competitor in a busy general community, while its need for pristine water makes a newly established or inconsistently maintained aquarium a poor fit. A calm, structured tank with suitable feeding access is more important than simply choosing other small fish.

Seriously Fish identifies electric or neon blue and balloon strains among the ornamental forms of M. ramirezi. It also notes that balloon forms in particular tend to be genetically weak, susceptible to disease and poor in reproductive vigour. Treat the rounded ornamental form as a reason for precise daily observation, modest feeding and stringent maintenance rather than as a hardier version of a standard ram.

Start with the decisive numbers

• Adult length: plan for 4.2 cm standard length.
• Water: use the FishBase and Seriously Fish species-level overlap of 27–30°C, pH 5.0–6.0 and 5–10 dGH.
• Floor space: provide a base measuring 60 × 30 cm or an equivalent footprint for a single pair.
• Social plan: FishBase advises aquarium keeping in pairs, but each fish still needs compatible behaviour, adequate cover and access to food.

Those figures work together. Warm water increases the importance of a well-maintained biological filter, while the low pH and soft-to-moderate hardness requirement rule out companions kept in harder water. The 60 × 30 cm footprint gives room for structure, feeding patches and separation when territorial behaviour appears.

Understand the offer and growth

One purchase supplies one live fish. If you would like a pair, add two to your basket. We cannot guarantee a male and a female, or that two fish will form a bond. If you intend to follow the pair-keeping guidance, plan the total aquarium population and select each fish deliberately.

The live size selector contains 2.5–3 cm and 3.5–4 cm dispatch grades. The size you select is the size supplied, not the adult size. Use the label to judge the fish’s supplied length, then plan the permanent aquarium around the 4.2 cm maximum recorded by FishBase.

Dispatch length does not establish sex, life stage, origin or future pair compatibility. Sex is guaranteed only when the selected option explicitly states male or female. This Electric Blue Balloon Ram listing has no sex-guaranteed option.

Read the gallery as a visual guide

Some gallery images are representative illustrations of this type of animal, and none shows the exact animal supplied, so pattern and colours can differ from the live animal.

Several gallery scenes show pale lavender-blue fish with orange foreheads and unusually long fins. Use those images to understand the rounded ram-like profile and aquarium presentation, not as a promise of the precise colour, fin shape or markings of the fish supplied.

Plan before choosing a dispatch grade

• Measure the aquarium footprint rather than judging capacity from height alone.
• Confirm that the established aquarium can remain within the FishBase and Seriously Fish overlap of 27–30°C, pH 5.0–6.0 and 5–10 dGH.
• Check the behaviour and water needs of every resident before adding another fish.
• Allow for adult territorial behaviour even when selecting the smaller dispatch grade.

Decide whether this ram fits your aquarium

This ram is a focused choice for a warm, mature aquarium rather than a general-purpose community fish. Its small adult length does not remove the need for floor space, cover, stable water and careful companion selection. Start with the permanent requirements and work backwards to the fish you hope to keep together.

Use a firm readiness test

The aquarium is ready when its filter is established, ammonia and nitrite test at zero, temperature remains within 27–30°C, and pH and hardness remain within the stated overlap. The planned companions must also tolerate those values and must not prevent this relatively poor competitor from feeding.

Choose structure that creates shady areas, caves and broken sight lines without taking away all open feeding space. A soft sandy substrate matches the species’ substrate-sifting feeding behaviour, while wood, suitable caves and flat rocks give it places to withdraw or establish a territory.

Browse the South American cichlid collection to compare other fish by their own requirements, but do not treat a shared collection as proof of compatibility. Water overlap, temperament, feeding access and available space must all pass separately.

Build around floor space and cover

Provide a tank base measuring 60 × 30 cm or an equivalent footprint for a single pair. Seriously Fish associates that footprint with about 54 litres. OATA’s dwarf-cichlid group guidance recommends at least 60 litres for a pair and says an aquarium of at least 80 litres will be needed to mix dwarf cichlids with other fish. Seriously Fish’s species-level figure for a single pair is about 54 litres on a 60 × 30 cm base; OATA’s broader group sheet gives a more cautious 60 litres for a pair.

Do not use a smaller temporary aquarium because the selected fish is below adult length. Territory, cover and feeding access depend on usable space now, and a dispatch grade is not an adult-space category. If other fish are included, start from at least 80 litres, which OATA’s group guidance says will be needed for mixing, and then assess whether the footprint and layout give every animal enough room.

Create a useful lower level

Use a soft sandy substrate where the ram can take and sift mouthfuls while searching for edible items. Seriously Fish also supports ceramic flowerpots, lengths of suitable plastic piping, wood roots, branches and flat rocks. Arrange them to create shady spots, caves and visual breaks without blocking the entire base.

• Open patches: leave accessible areas where small foods can settle and be found.
• Retreats: provide more than one shaded or enclosed position so one fish cannot control every shelter.
• Cover: use wood, plants or ornaments to give plenty of cover so a chased fish can move out of view.
• Flat surfaces: include one or two flat rocks or similar surfaces if natural pair behaviour is part of the plan.

Live plants can contribute cover. Seriously Fish names Microsorum, Taxiphyllum, Cryptocoryne and Anubias as usable examples. Where live plants are not used, OATA recommends plastic plants and suitable ornaments such as plant pots, model caves, wood and leaf litter to provide shelter. The functional test is whether the layout supplies shelter and separation while retaining room to feed and observe the fish.

Hold warm, soft and acidic water

Keep this ram at 27–30°C, pH 5.0–6.0 and 5–10 dGH. These are the overlapping species values from FishBase and Seriously Fish: FishBase records 27–30°C, pH 5.0–6.0 and 5–12 dGH, while Seriously Fish gives 27–30°C, pH 4.0–7.0 and 1–10 dGH.

OATA’s broad dwarf-cichlid guidance gives 22–27°C, pH 6.0–8.0 and 4–12 dGH. For this warm-water ram, retain the narrower FishBase and Seriously Fish instruction rather than extending the aquarium into the cooler, more alkaline part of that group range. The values meet OATA’s temperature guidance at 27°C and its pH guidance at 6.0, while hardness of 5–10 dGH lies inside all three ranges.

Test the values as a set

A temperature match alone is not enough. Record temperature, pH and general hardness together, because a fish that shares this temperature may still require water that is too hard or alkaline for this ram. Our water chemistry guide explains the purpose of the main tests, and the water matcher helps compare measured aquarium values with the required range.

Seriously Fish gives a heater planning figure of roughly 125–175 W for an aquarium of about 54 litres when the room is around 20°C. Treat that as a sizing reference for those stated conditions; actual equipment still needs to hold the aquarium steadily within 27–30°C.

Protect water quality with filtration and maintenance

Run a mature biological filter continuously and keep ammonia and nitrite at zero mg per litre. The RSPCA explains that fish release toxic ammonia, which filter bacteria convert first to toxic nitrite and then to safer nitrate. This biological process is why an established, maintained filter is essential.

For an aquarium of about 54 litres, Seriously Fish suggests a filter rated around 110–160 litres per hour to provide the gentle movement this species wants. Rating alone is not enough: check that the outlet does not create forceful movement across the ram’s feeding and shelter areas, and make sure the filter continues moving water without blockage.

Use a repeatable weekly routine

1. Test ammonia and nitrite at least once per week and confirm both remain at zero.
2. Check nitrate; OATA says it should not exceed 20 mg per litre above the normal tap-water level.
3. At least once every week, complete a partial water change of 25%.
4. Treat replacement tap water with conditioner to remove harmful chlorine or chloramine before adding it.
5. Use a siphon where needed to remove solid waste from the substrate.
6. Check the filter for blockages and confirm normal operation after maintenance.

If filter media needs cleaning, do not rinse it under the tap. Rinse it lightly in aquarium water removed during the partial water change. This reduces the loss of beneficial bacteria and avoids exposing the established population to chlorine or chloramine.

Respond to an abnormal test by protecting water quality first. Pause further livestock additions, check the filter and feeding level, and carry out appropriate maintenance with conditioned replacement water. Do not use a routine water change as permission to overfeed or overcrowd the aquarium between tests.

Feed a varied substrate-sifting diet

Offer a varied diet built around small live and frozen invertebrate foods, supported by good-quality sinking dried food of a suitable size. Seriously Fish describes Mikrogeophagus as benthophagous: it takes mouthfuls of substrate, sifts out edible items and expels the remaining material through the mouth and gill openings. It also browses solid surfaces and takes food from the water column.

Suitable named foods include bloodworm, Artemia, Daphnia and grindal worm. Small sinking dried foods can supplement that variety. Seriously Fish says home-made, gelatine-bound foods containing dried fish food, puréed shellfish, fresh fruit and vegetables also work well when cut into bite-sized discs.

Set the portion by time, not by guesswork

Feed once a day and offer only what the fish can eat within a few minutes. That frequency and portion come from OATA’s dwarf-cichlid guidance. Watch where the food lands and confirm that this relatively poor competitor reaches enough of it before faster open-water fish consume the meal.

Uneaten food breaks down and releases toxic waste into the water, so feeding and filtration cannot be managed separately. A small daily portion protects water quality only when it is actually consumed. Check each individual rather than assuming that food disappearing from view means every fish has eaten.

Prepare the aquarium and acclimatise carefully

Prepare the permanent aquarium before the fish arrives. The filter should be mature, ammonia and nitrite should be zero, and the FishBase and Seriously Fish overlap of 27–30°C, pH 5.0–6.0 and 5–10 dGH should already be stable. If this is your first setup, follow our first tropical aquarium guide before choosing livestock.

OATA advises increasing the aquarium population slowly because the beneficial bacteria established during maturation must respond whenever fish numbers and feeding rise. Adding too many fish too quickly can leave the filter unable to process the extra waste, producing unhealthy ammonia and nitrite.

Follow the arrival sequence

1. Be present to receive the parcel so live fish are not left unattended.
2. Start filming before the sealed parcel is opened, keeping the outer box visible, and continue in one take through opening until the fish can be seen inside the sealed bag.
3. Open and inspect the parcel on the day it arrives while the fish remains in the bag.
4. Float the bag for 20–30 minutes before releasing the fish.
5. Release the fish without pouring the bag water into the aquarium.

The current delivery and Live Arrival Guarantee policy explains the packing, receipt and claim requirements. Keep the unboxing video and order number, and if anything has gone wrong, contact us the same day your fish arrive with both so we can arrange a replacement or refund.

Check the aquarium after release

Observe swimming, breathing and access to shelter without changing several conditions at the same time. Confirm that the filter remains operational and that existing residents do not immediately prevent the new fish from withdrawing or reaching the feeding area.

Continue testing after the population changes. A previously stable reading does not remove the need for the weekly test schedule, because feeding and waste have increased. Add further fish only gradually and only after water quality remains controlled.

Use first-week health checkpoints

Watch the fish’s swimming, colour, temperament, breathing, appearance, body condition and feeding every day. OATA identifies changes in these areas as early warning signs. Compare behaviour across several calm observations rather than reacting to a single brief movement.

Act on specific changes

Keep the response ordered. First establish the water readings and equipment status, then assess feeding and social pressure. This prevents a territorial or feeding problem from being mistaken for a filtration problem, while still addressing toxic ammonia or nitrite promptly.

Review continuing progress

Confirm that the fish uses cover, reaches food and maintains normal breathing and swimming. Continue the 25% partial water change at least once every week, water testing at least once per week and the filter checks.

Reassess the layout and population whenever behaviour or feeding access changes. A fish that feeds successfully but is repeatedly chased still needs a compatibility or space change. Equally, peaceful behaviour does not compensate for water outside 27–30°C, pH 5.0–6.0 or 5–10 dGH.

Manage pair and spawning behaviour without assumptions

Plan Mikrogeophagus ramirezi around pair keeping, but do not assume that two selected individuals will be a male and female or will form a compatible bond. FishBase describes aquarium keeping in pairs, while Seriously Fish identifies the species as a biparental substrate spawner. Those biological points do not change the sold unit or create a breeding promise.

OATA notes that even well-settled dwarf-cichlid pairs will often chase each other, so providing plenty of cover is essential, and that dwarf cichlids can be territorial, especially when breeding. Provide several retreats and enough cover so one fish can leave another’s defended area. Constant pursuit across the full aquarium means the layout, available space or social combination needs attention.

Separate display keeping from breeding plans

A display aquarium should prioritise stable water, feeding access and compatible behaviour. Do not treat spawning as a necessary sign of health. If spawning occurs in a mixed aquarium, other fish may disturb the site or prey on fry; OATA advises avoiding such tank mates when breeding is intended.

Seriously Fish recommends a dedicated setup with no other fish for deliberate breeding. It describes good diet and stringent maintenance as the main requirements and notes that the eggs easily develop fungus or fail to develop unless the water is very clean and of low hardness. Inexperienced pairs may eat their brood, and commercially produced ornamental fish can show poor fertilisation or repeated brood consumption.

Use behaviour to make the next decision

• Brief display with retreat possible: continue observing and preserve the cover.
• Repeated chasing with no refuge: change the layout or separate the fish.
• One fish misses meals: correct feeding access and reassess the social combination.
• A defended spawning site appears: review every companion and the available territory.

Screen every potential companion

Choose only peaceful fish that can live within the FishBase and Seriously Fish overlap of 27–30°C, pH 5.0–6.0 and 5–10 dGH. Seriously Fish does not recommend this ram for the general community aquarium because it requires pristine water and is a poor competitor, although it does not have to be maintained alone.

Groups of peaceful, open water-dwelling characids or similar are the preferred companion type. Their visible schooling or shoaling behaviour may help reduce shyness. Seriously Fish specifically names Paracheirodon axelrodi and Paracheirodon simulans as species that meet the warm-water requirement, but each proposed group still needs full checks for water, temperament, feeding access and total space.

Avoid clear conflicts

• Territorial or otherwise aggressive fishes: avoid them, including most other cichlids.
• Fish requiring harder water: avoid them because their water needs conflict with the ram’s pH and hardness range.
• Fish unable to manage 27–30°C: do not combine them with this warm-water species.
• Breeding-site or fry predators: avoid them when deliberate breeding is the goal.

Treat space as part of compatibility

OATA’s dwarf-cichlid group guidance says an aquarium of at least 80 litres will be needed to mix dwarf cichlids with other fish. That volume is a starting point, not permission to combine incompatible species. Check the footprint, number of territories, retreat positions and feeding locations as well as the nominal capacity.

For animal types beyond the named examples, compatibility remains a case-by-case decision. Apply the same screening rule: shared water values, peaceful behaviour, enough room, no conflict over defended areas and reliable access to food. A small body size or South American origin does not answer those questions by itself.

Respond to territory and feeding pressure

Separate normal use of a territory from sustained pressure on another fish. Dwarf cichlids may become territorial, especially when breeding. OATA’s dwarf-cichlid guidance says even well-settled pairs will often chase each other, which makes plenty of cover essential. The aquarium must let the pursued fish move behind cover, leave the defended patch and continue feeding.

Recheck the complete community

Compatibility can change when the aquarium population, layout or breeding behaviour changes. Reassess the whole tank after adding fish, moving major décor or seeing a defended site. Preserve the minimum 60 × 30 cm footprint for a pair, and use at least 80 litres whenever other fish share the aquarium, because OATA’s group guidance says that volume will be needed for mixing.

Do not solve a poor social match by compromising the ram’s water. The FishBase and Seriously Fish overlap remains 27–30°C, pH 5.0–6.0 and 5–10 dGH. A companion that needs conditions outside that range belongs in a different aquarium.

The best outcome is not merely the absence of visible fighting. Every fish should retain access to suitable water, shelter and food. Persistent hiding, missed meals, changing colour or altered breathing all justify a fresh assessment of water quality and social pressure.

Buyer questions answered

How big does the Electric Blue Balloon Ram get?

FishBase records Mikrogeophagus ramirezi at up to 4.2 cm standard length, which is the adult planning figure used here.

What size aquarium does Mikrogeophagus ramirezi need?

Seriously Fish gives a 60 × 30 cm base and about 54 litres as sufficient for a single pair; OATA’s dwarf-cichlid group guidance recommends at least 60 litres for a pair and says at least 80 litres will be needed to mix them with other fish.

How many Electric Blue Balloon Rams should I keep?

FishBase advises aquarium keeping in pairs, so plan for two compatible fish with cover and feeding access; two selected individuals are not guaranteed to form a compatible or breeding pair.

Is the Electric Blue Balloon Ram suitable for beginners?

It suits a keeper able to maintain pristine, stable water, a mature biological filter and carefully screened companions; a new or inconsistently maintained aquarium is a poor fit.

What does Mikrogeophagus ramirezi eat?

Offer small live and frozen foods such as bloodworm, Artemia, Daphnia and grindal worm, supplemented by suitable sinking dried food; feed only what it can eat within a few minutes once a day.

What temperature, pH and hardness does Mikrogeophagus ramirezi need?

Keep it within the FishBase and Seriously Fish overlap of 27–30°C, pH 5.0–6.0 and 5–10 dGH.

Is this fish aggressive?

It may become territorial, especially during breeding, so provide cover and avoid territorial or otherwise aggressive fishes, including most other cichlids.

Which fish can it live with?

Consider groups of peaceful, open water-dwelling characids or similar after full screening; Seriously Fish names Paracheirodon axelrodi and Paracheirodon simulans as warm-water examples.

How does this fish arrive alive in the UK?

Film from the sealed parcel through opening before floating the bag. Tropical Fish Co hand-bags the fish in pure oxygen, uses an insulated box and adds a heat pack when the weather calls for it; float the bag for 20–30 minutes before release.

Public care and identity references

• FishBase: species identity, family, distribution, recorded environment, adult length and pair-keeping note.
• Seriously Fish: aquarium footprint, water conditions, décor, feeding, behaviour, compatibility and reproduction.
• OATA: dwarf-cichlid aquarium care, maintenance, feeding, observation and community planning.
• RSPCA: biological filtration and aquarium waste processing.
• Tropical Fish Co: packing, receipt, acclimatisation and Live Arrival Guarantee procedure.