Madagascar Rainbowfish / Zona (Bedotia geayi)

Madagascar Rainbowfish Care for an Active Planted Group

Madagascar Rainbowfish / Zona (Bedotia geayi) is an active, streamlined rainbowfish from eastern Madagascar. It is kept for movement, subtle colour and group behaviour rather than for a single show specimen. This listing covers the multi-size Shopify product anchored by SKU 5001, with smaller and larger size variants available when stock allows.

The important care point is space. A young Bedotia can look modest in a shop photo, but the adult fish is a fast midwater swimmer that looks best in a group. A mature planted aquarium with open swimming room, clean oxygen-rich water and peaceful tankmates is the right target. A cramped tank, dirty substrate or aggressive companions will hide the best behaviour.

This update keeps the useful source-backed care notes while removing old forced sales phrasing. It also adds tables so the page is easier to scan on mobile and more useful for search systems that need clear, structured care information.

Care point	Practical guidance
Adult planning size	Plan around roughly 8-9 cm adult fish, with males often showing stronger colour and finnage.
Group size	Keep a group where possible; 6 or more is a sensible minimum and 8-10 gives a calmer display.
Minimum aquarium	120 litres as a careful starting point, with a long tank preferred for active swimming.
Temperature	Approx. 22-26 C in normal aquarium care; keep stable and well oxygenated.
Water style	Clean, mature, moderate water with good filtration and regular maintenance.
Temperament	Peaceful and active; avoid slow, delicate fish that may be outcompeted.

Natural Range and Identity

Bedotia geayi is one of the Madagascar rainbowfishes, a group of freshwater fishes associated with the island's rivers and streams. FishBase lists Bedotia geayi from the Mananjary River basin in eastern Madagascar, with freshwater pelagic habits and a tropical range. Practical Fishkeeping's report on the redescription of Madagascan rainbowfishes is also useful because it shows why names and trade labels around Bedotia can be confusing.

Trade names such as Madagascar Rainbowfish, Zona and Red-Tailed Silverside can overlap in casual use, so the scientific name and supplier identity matter. This product is kept under Bedotia geayi, and the listing media include SKU-owned source and aquarium views. If you are comparing it with other rainbowfish, compare adult size, group needs, water style and swimming space rather than relying on colour name alone.

Name seen in trade	How to read it
Madagascar Rainbowfish	Common hobby name for Madagascan Bedotia-type rainbowfish.
Zona	Supplier/trade label used on this product line.
Bedotia geayi	Scientific name used for this listing and care record.
Red-Tailed Silverside	Another common-style name connected with the species group.

Aquarium Layout

Open swimming room with planted security

Build the tank around swimming length first. These fish use the middle and upper water column, so leave open space at the front or centre. Plant the sides and back, use wood or taller plants for security, and avoid filling every lane with hardscape. A darker background and shaded areas help the fish feel safer and can improve the way their colours read.

The aquarium should feel planted but not cluttered. Hardy background plants, floating cover and wood tangles give security, while the open lane lets the group move naturally. This balance is better than a bare tank with no cover or a dense aquascape where the fish cannot turn and display.

Layout element	Best choice	Why it helps
Swimming space	Open front or centre lane	Lets the group move without constant turning pressure
Planting	Sides, back and floating shade	Provides security while keeping the display open
Hardscape	Wood and smooth stones used sparingly	Breaks sight lines without blocking movement
Flow	Moderate with oxygenation	Supports active fish without exhausting them
Lighting	Moderate, softened by plants if bright	Reduces nervousness and improves viewing comfort

Water Parameters and Stability

FishBase gives a harder, slightly alkaline range for Bedotia geayi, while general aquarium care references often use a practical moderate range for captive-kept Madagascan rainbowfish. The safest approach is stable, clean water rather than constant adjustment. Avoid sudden swings after water changes and keep dissolved waste low.

Parameter	Working range	Care note
Temperature	22-26 C	Stable warmth suits everyday aquarium care
pH	Approx. 6.8-7.8	Do not chase numbers if the aquarium is stable and mature
Hardness	Moderate	Avoid very soft crash-prone conditions and sudden changes
Oxygen	High	Active schooling fish reward good surface movement and filtration
Maintenance	Regular partial water changes	Keeps nitrate and dissolved waste under control

Group Size and Behaviour

More fish usually means calmer behaviour

Madagascar Rainbowfish should be kept as a social group. A lone fish or pair may survive, but the display is weaker and the fish can become nervous. In a group, attention is spread naturally, males can show without pinning one fish constantly, and the aquarium looks more alive.

Use a mixed group where possible. Mature males are usually more colourful and expressive, while females help stabilise group behaviour. If you keep several males, give them swimming room and visual breaks so display behaviour stays interesting rather than stressful.

Group plan	Expected result
Single fish	Not recommended; behaviour is usually nervous or subdued
Pair only	Can create pressure on one fish and does not show natural movement
Six fish	Practical minimum for a small display group
Eight to ten or more	Better movement, calmer social pressure and stronger display

Feeding

Small varied foods for active midwater fish

Bedotia rainbowfish are active omnivores. Offer high-quality flake or small granules as a staple, then rotate frozen foods such as daphnia, brine shrimp, cyclops, mosquito larvae and fine bloodworm where suitable. They feed readily in the water column, so choose foods that stay available long enough for the group without polluting the tank.

Feed measured portions. A busy group can make it look as if more food is always needed, but excess food quickly reduces water quality. Smaller feeds once or twice a day are safer than one heavy feed, especially in tanks with other midwater fish.

Compatibility

Good tankmates are peaceful, similar-sized community fish that enjoy stable warm water and will not harass the group. Other rainbowfish, medium peaceful tetras, rasboras, danios, calm barbs and suitable bottom dwellers can work when the aquarium is large enough. Avoid large aggressive cichlids, fin nippers, predatory species and very slow long-finned fish that may be outcompeted at feeding time.

Because Madagascar Rainbowfish are active, they can make shy species retreat if the tank is small. Use planting, feeding spread and a long aquarium to keep the community balanced. If a tankmate hides constantly after the group is added, the issue may be activity level rather than aggression.

Size Variants and Choosing Stock

This Shopify product can include several size variants, from smaller juveniles to larger specimens when available. Smaller fish are usually easier to integrate into a growing group, while larger fish give a faster display but need more immediate space. Always choose based on the aquarium you have now and the group you are building.

Variant type	Best use
Smaller juveniles	Growing a group gradually in a mature aquarium
Mid-size fish	Balancing visibility with easier acclimation
Larger specimens	Established larger tanks where swimming room is already available
Mixed sizes	Use caution; ensure smaller fish are not excluded at feeding time

Health and Settling Signs

A settled Madagascar Rainbowfish group should move confidently through open water, regroup after small disturbances and feed without frantic chasing. Colour may be modest during transport or in a bare aquarium, but the fish should look alert, balanced and responsive. Males usually show better fin colour and display behaviour once the group has space and the tank feels secure.

Watch the whole group rather than one fish in isolation. A single fish hiding can mean social pressure, a dominant tankmate, poor feeding access or a layout with too little cover. Repeated surface hanging, rapid breathing or clamped fins should trigger a water-quality check first. Active rainbowfish use oxygen quickly, so filtration, surface movement and regular maintenance make a visible difference.

What you see	Likely meaning	What to check
Group cruising calmly	Settled schooling behaviour	Keep feeding and maintenance consistent
One fish isolated	Possible social pressure or illness	Check bullying, feeding access and breathing
Surface hanging	Possible oxygen or water-quality issue	Test water, increase aeration and inspect filtration
Pale colour after arrival	Often transport stress	Keep lights low and avoid unnecessary disturbance
Frantic feeding only	Competition may be high	Use smaller foods and spread the feed across the tank

Breeding and Display Behaviour

Madagascar Rainbowfish are egg scatterers. In a well-conditioned group, males display with stronger colour and fin posture, while females and subdominant fish move through planted cover. Fine-leaved plants, spawning mops or dense plant roots may catch eggs, although this listing is written for normal display care rather than specialist breeding.

If breeding is attempted, protect eggs and fry from adult fish and tankmates. Clean water, small live or frozen foods and stable conditions are more important than forcing temperature changes. Juveniles of many rainbowfish-type species can be sensitive to water-quality swings, so any fry setup needs gentle filtration and steady maintenance.

Breeding cue	Keeper note
Male colour increases	Often a normal display sign in a settled group
Repeated attention to plants	May indicate spawning behaviour
Adults searching plant roots	Eggs may be eaten unless protected
Fry appear in a community	Survival is unlikely without cover and separate feeding

Common Mistakes to Avoid

The first mistake is buying too few. A pair may seem cheaper, but it does not show the fish properly and can create uneven pressure between individuals. A group is not an optional display extra; it is part of how the fish feels secure and behaves naturally.

The second mistake is treating it like a slow ornamental fish. Bedotia geayi needs swimming length and oxygen-rich water. It is not ideal for a tiny planted cube, a stagnant display or a tank dominated by slow long-finned fish. The third mistake is letting the aquarium become too warm or too dirty because the fish still appears active. Active fish can hide stress until water quality has already slipped.

Mistake	Better approach
Buying one or two only	Build a proper group so behaviour spreads naturally
Using a short aquarium	Choose a longer tank with open swimming lanes
Overcrowding with midwater fish	Leave room for the group to turn and display
Skipping water changes	Keep nitrate and dissolved waste low
Choosing timid tankmates	Match activity level as well as water parameters

Arrival and First Week

On arrival, keep lights low and give the group a quiet settling period. They may hold in cover at first, especially if the aquarium is bright or busy. Acclimate steadily, release into a prepared planted layout and offer a small first feed only when the fish are upright, alert and exploring.

Tropical Fish Co includes Live Arrival Guarantee support on eligible livestock orders, and first-time customers can use WELCOME10 where eligible. Those details are included once because they help the keeper understand ordering confidence; the care match still comes first.

Compare Similar Rainbowfish

Choose by water style, group needs and adult size

If you want a different colour or swimming style, compare this fish with the Parkinson's Rainbowfish, Threadfin Rainbowfish, Spotted Rainbowfish and Lake Kutubu Rainbowfish. Use adult size, water preference, activity level and group size to choose, not just the colour in a single photo.

Source-Backed Notes

• FishBase was checked for Bedotia geayi identity, Mananjary basin distribution, freshwater habitat and listed water ranges.
• Practical Fishkeeping was checked for the redescription context around Madagascan rainbowfishes and the distinction between common Bedotia names.
• General rainbowfish care references were checked for active schooling behaviour, oxygen-rich water, planted layouts and group size guidance.
• Petra Aqua source data and SKU-owned media were checked for the current product identity and size-variant context.